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BOS - STL

$47 Find cheap flights from Boston to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to St. Louis departing on 6/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/22
Sat 6/29

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to St. Louis.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to St. Louis.
In the last 7 days travelers have searched 43,800,826 times on KAYAK, and here is why:

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Cheap flight deals from Boston to St. Louis (BOS-STL)

 
These are the cheapest deals for flights from Boston to St. Louis currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Boston to St. Louis

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Boston to St. Louis.

Recent one-way flight deals from Boston to St. Louis

Only flying one-way? Below are some of the best one-way flight deals from Boston to St. Louis found on KAYAK recently.

Recent last minute flight deals from Boston to St. Louis

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Boston to St. Louis.

Recent direct flight deals from Boston to St. Louis

The latest deals for direct flights from Boston to St. Louis so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Boston to St. Louis

Find recent round-trip train or bus tickets from Boston to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
8:15 am - 2:42 pmBOS-STL
7h 27m1 stop
6:42 pm - 9:13 amSTL-BOS
13h 31m1 stop
$156Frontier
Find Deal
Wed, Aug 21 - Fri, Aug 23
12:32 pm - 8:42 pmBOS-STL
9h 10m1 stop
3:09 pm - 12:27 amSTL-BOS
8h 18m1 stop
$160Frontier
Find Deal
Wed, Jul 10 - Sat, Jul 13
6:10 am - 10:14 pmBOS-STL
17h 04m2 stops
10:34 am - 12:43 amSTL-BOS
13h 09m1 stop
$163Spirit Airlines
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Mon, Sep 16 - Tue, Sep 17
11:57 am - 10:14 pmBOS-STL
11h 17m1 stop
10:34 am - 12:43 amSTL-BOS
13h 09m1 stop
$186Spirit Airlines
Find Deal
Mon, Sep 16 - Tue, Sep 17
5:35 am - 9:19 amBOS-STL
4h 44m1 stop
7:06 pm - 1:31 amSTL-BOS
5h 25m1 stop
$196Delta
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Thu, Jun 6 - Mon, Jun 10
9:10 am - 2:57 pmBOS-STL
6h 47m1 stop
7:06 pm - 1:31 amSTL-BOS
5h 25m1 stop
$229Delta
Find Deal
Tue, Jun 18 - Mon, Jun 24
5:48 pm - 9:44 pmBOS-STL
4h 56m1 stop
6:08 am - 1:15 pmSTL-BOS
6h 07m1 stop
$271United Airlines
Find Deal
Mon, Jun 10 - Wed, Jun 12
6:00 am - 10:57 amBOS-STL
5h 57m1 stop
6:08 am - 1:15 pmSTL-BOS
6h 07m1 stop
$276United Airlines
Find Deal
Sat, Jun 8 - Wed, Jun 12
2:14 pm - 9:28 pmBOS-STL
8h 14m1 stop
6:51 pm - 10:34 pmSTL-BOS
2h 43mnonstop
$304American Airlines
Find Deal
Tue, Jun 18 - Tue, Jun 25
7:00 am - 9:07 amBOS-STL
3h 07mnonstop
6:51 pm - 10:34 pmSTL-BOS
2h 43mnonstop
$311American Airlines
Find Deal
Tue, Jun 18 - Tue, Jun 25
6:10 am - 2:23 pmBOS-STL
9h 13m1 stop
$47Spirit Airlines
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Tue, Jun 11
9:38 pm - 5:28 pmBOS-STL
20h 50m2 stops
$69Spirit Airlines
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Wed, Jun 12
9:16 am - 7:07 amBOS-STL
22h 51m1 stop
$78Frontier
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Wed, Jun 5
9:16 am - 7:07 amBOS-STL
22h 51m1 stop
$79Frontier
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Wed, Jun 5
5:35 am - 9:19 amBOS-STL
4h 44m1 stop
$98Delta
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Tue, Jun 4
7:00 am - 9:07 amBOS-STL
3h 07mnonstop
$156American Airlines
Find Deal
Wed, Jun 12
7:00 am - 9:07 amBOS-STL
3h 07mnonstop
$159American Airlines
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Wed, Jun 5
8:45 am - 3:41 pmBOS-STL
7h 56m2 stops
$176United Airlines
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Wed, Jun 12
5:45 am - 11:48 amBOS-STL
7h 03m1 stop
$199Delta
Find Deal
Sun, Jun 2
8:30 am - 5:10 pmBOS-STL
9h 40m2 stops
$224United Airlines
Find Deal
Sat, Nov 2
5:48 pm - 9:44 pmBOS-STL
4h 56m1 stop
6:08 am - 2:16 pmSTL-BOS
7h 08m1 stop
$396United Airlines
Find Deal
Fri, May 24 - Tue, Jun 4
7:00 am - 2:19 pmBOS-STL
8h 19m1 stop
6:00 am - 12:22 pmSTL-BOS
5h 22m1 stop
$436Delta
Find Deal
Fri, May 24 - Mon, May 27
11:21 am - 3:58 pmBOS-STL
5h 37m1 stop
6:30 am - 12:29 pmSTL-BOS
4h 59m1 stop
$587United Airlines
Find Deal
Fri, May 24 - Mon, May 27
10:27 pm - 7:05 amBOS-STL
33h 38m3 stops
4:45 pm - 8:09 pmSTL-BOS
26h 24m3 stops
Sat, May 25 - Mon, May 27
8:00 am - 10:17 amBOS-STL
3h 17mnonstop
5:04 am - 12:14 pmSTL-BOS
6h 10m1 stop
$675American Airlines
Find Deal
Sat, May 25 - Tue, May 28
8:00 am - 10:17 amBOS-STL
3h 17mnonstop
1:40 pm - 5:29 pmSTL-BOS
2h 49mnonstop
$690American Airlines
Find Deal
Sat, May 25 - Mon, May 27
5:52 pm - 10:28 amBOS-STL
17h 36m2 stops
2:35 pm - 3:55 pmSTL-BOS
24h 20m3 stops
$697Spirit Airlines
Find Deal
Fri, May 24 - Tue, May 28
5:52 pm - 10:28 amBOS-STL
17h 36m2 stops
10:34 am - 10:38 amSTL-BOS
23h 04m2 stops
$715Spirit Airlines
Find Deal
Fri, May 24 - Tue, May 28
7:41 pm - 6:41 pmBOS-STL
24h 00m2 stops
2:36 pm - 2:56 pmSTL-BOS
23h 20m1 stop
$1,090Alaska Airlines
Find Deal
Fri, May 24 - Mon, May 27
7:41 pm - 6:41 pmBOS-STL
24h 00m2 stops
2:36 pm - 7:30 amSTL-BOS
15h 54m2 stops
$1,235Alaska Airlines
Find Deal
Fri, May 24 - Mon, May 27
7:00 am - 9:07 amBOS-STL
3h 07mnonstop
6:51 pm - 10:34 pmSTL-BOS
2h 43mnonstop
$311American Airlines
Find Deal
Tue, Jun 18 - Tue, Jun 25
4:14 pm - 6:14 pmBOS-STL
3h 00mnonstop
6:51 pm - 10:34 pmSTL-BOS
2h 43mnonstop
$314American Airlines
Find Deal
Wed, Jun 5 - Tue, Jun 25
7:00 am - 9:14 amBOS-STL
3h 14mnonstop
7:00 pm - 10:40 pmSTL-BOS
2h 40mnonstop
$316American Airlines
Find Deal
Sat, Aug 31 - Wed, Sep 4
7:00 am - 9:14 amBOS-STL
3h 14mnonstop
6:56 pm - 10:34 pmSTL-BOS
2h 38mnonstop
$331American Airlines
Find Deal
Tue, Aug 20 - Mon, Aug 26
7:00 am - 9:12 amBOS-STL
3h 12mnonstop
6:51 pm - 10:29 pmSTL-BOS
2h 38mnonstop
$346American Airlines
Find Deal
Mon, Jul 22 - Tue, Jul 23
4:14 pm - 6:14 pmBOS-STL
3h 00mnonstop
6:51 pm - 10:34 pmSTL-BOS
2h 43mnonstop
$347American Airlines
Find Deal
Wed, Jun 5 - Sun, Jun 9
7:00 am - 9:12 amBOS-STL
3h 12mnonstop
6:56 pm - 10:34 pmSTL-BOS
2h 38mnonstop
$351American Airlines
Find Deal
Thu, Aug 1 - Mon, Aug 12
7:00 am - 9:07 amBOS-STL
3h 07mnonstop
6:51 pm - 10:34 pmSTL-BOS
2h 43mnonstop
$356American Airlines
Find Deal
Mon, Jun 24 - Wed, Jun 26
7:00 am - 9:14 amBOS-STL
3h 14mnonstop
11:05 am - 2:43 pmSTL-BOS
2h 38mnonstop
$366American Airlines
Find Deal
Sun, Aug 18 - Sat, Aug 24
7:00 am - 9:08 amBOS-STL
3h 08mnonstop
7:00 pm - 10:40 pmSTL-BOS
2h 40mnonstop
$367American Airlines
Find Deal
Fri, Sep 6 - Sun, Sep 15

Flights from Boston to St. Louis - Travel Insights & Trends

Get data-powered insights and trends into flights from Boston to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Boston to St. Louis?

The average price of all flights from Boston to St. Louis clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to St. Louis on a Tuesday and more expensive on a Monday. On your return trip to Boston, you should consider flying back on a Wednesday, and avoid Mondays for better deals.

What is the cheapest month to fly from Boston to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Boston to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Boston to St. Louis is February, where tickets cost $344 on average. On the other hand, the most expensive months are June and November, where the average cost of tickets is $521 and $497 respectively.

How far in advance should I book a flight from Boston to St. Louis?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Boston to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Boston to St. Louis, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 81 days before departure.

Which airlines provide the cheapest flights from Boston to St. Louis?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Boston to St. Louis were found on Frontier ($156) and Spirit Airlines ($163). Spirit Airlines proposed the cheapest one-way flight at $47.

Which airlines fly non-stop between Boston and St. Louis?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Boston to St. Louis.
There are 2 airlines that fly nonstop from Boston to St. Louis. They are American Airlines and Southwest. The cheapest airline for this route is American Airlines, with the best one-way deal found costing $278. On average, the best prices for this route can be found at American Airlines.

How many flights are there between Boston and St. Louis per day?

Each day, there are between 6 and 9 nonstop flights that take off from Boston and land in St. Louis, with an average flight time of 2h 58m. The most common departure time is 7:00 am and most flights take off in the morning. Each week, there are 53 flights. The most frequent day of departure is Thursday, when 17% of all weekly flights depart. The fewest flights depart on a Tuesday.

Which cabin class options are there for flights between Boston and St. Louis?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Boston to St. Louis take?

A direct flight to St. Louis will take on average 2h 58m to travel the 1,043 miles flying distance from Boston.

What’s the earliest departure time from Boston to St. Louis?

Early birds can take the earliest flight from Boston at 6:50 am and will be landing in St. Louis at 8:45 am.

What’s the latest departure time from Boston to St. Louis?

If you prefer to fly at night, the latest flight from Boston to St. Louis jets off at 8:00 pm and lands at 10:00 pm.

Good to know

Low season

January

High season

May

Cheapest flight

$47
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Boston to St. Louis

When to book flights from Boston to St. Louis

Are your dates flexible? Find out the best times to travel from Boston to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to St. Louis

  • Does STL provide facilities for nursing mothers?

    Yes. STL provides lactation suites for traveling mothers if they want some privacy while they breastfeed or if they need to pump. These lactation suites are outfitted with a comfortable chair, a table, a sink, a bench, a footrest, and an outlet that is appropriately placed for a breast pump. These clean, private suites can be found at Gates C9, E33, and A10.

  • Does BOS have a lounge for the US military?

    Yes. The USO at BOS proudly welcomes active-duty service members of the US military and their families. The lounge is located in Terminal C, before security, on the lower level, toward Terminal E. Amenities at this lounge include comfortable seating around a TV with DVDs and Xbox games, a kitchen area, internet access, computers, emergency personal-care kits, reference materials about Boston, and so much more. This USO is open from 8 am until 9 pm Monday thru Friday and from 8 am to 8 pm on Saturday and Sunday.

  • Does STL have a prayer room or chapel for passengers?

    STL provides travelers and staff alike with two interfaith chapels. The chapels provide prayer books, prayer rugs, and services that include empathetic listening, spiritual guidance, and religious services. Open and available 24/7, one chapel is located on the lower level of Terminal 1 and the other is at Gate E40.

  • How can I fly between BOS and STL?

    American Airlines, JetBlue, and Southwest are among the airlines that operate direct flights between BOS and STL. American Airlines and Delta are among the airlines that offer flights between BOS and STL that have one-stop. Layover cities include Philadelphia (PHL), Washington DC (DCA), and Charlotte (CLT). United Airlines is one of the carriers that operate flights between STL and BOS that have two stops. Layover cities include Newark (EWR) and Chicago (ORD).

  • What is the cheapest flight from Boston to St. Louis?

    In the last 3 days, the lowest price for a flight from Boston to St. Louis was $47 for a one-way ticket and $156 for a round-trip.

  • Do I need a passport to fly between Boston and St. Louis?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Boston to St. Louis?

    When flying out of Boston you will be using Boston Logan Intl. You will be landing at St. Louis, also known as Lambert-St Louis.

  • Which airlines offer Wi-Fi service onboard planes from Boston to St. Louis?

    American Airlines, JetBlue, Delta, Alaska Airlines, and Aeromexico offer inflight Wi-Fi service on the Boston to St. Louis flight route.

  • Which aircraft models fly most regularly from Boston to St. Louis?

    The Embraer 175 is the aircraft model that flies most regularly on the Boston to St. Louis flight route.

  • Which airline alliances offer flights from Boston to St. Louis?

    oneworld is the only airline alliance operating flights between Boston and St. Louis.

  • On which days can I fly direct from Boston to St. Louis?

    There are nonstop flights from Boston to St. Louis on a daily basis.

  • Which is the best airline for flights from Boston to St. Louis, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Boston to St. Louis are Delta and United Airlines. With an average price for the route of $406 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $511 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Boston to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Boston with another airline. Booking your flights between Boston and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Boston to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $156 or less one-way and $378 or less round-trip.
  • Air Choice One and Cape Air are the airlines for which the St. Louis Lambert International Airport (STL) serves as a hub. Delta Airlines is the airline for which Boston Logan International Airport (BOS) is a hub. Also, Boston is a focus city for JetBlue.
  • BOS provides animal relief stations for those traveling with a pet or service animal. If your four-legged friend or guide needs to go to the bathroom before your flight, there are animal relief stations in Terminal B at Gate B29, in Terminal C at Gate C20, and in Terminal E at Gate E7.
  • BOS strives to make its terminals and facilities as accessible as possible. Some of the airport’s accessibility adaptations include elevators and ramps in all the terminals, fire alarms that are audio and visual, accessible restrooms in every terminal, and the availability of guest passes that caregivers can use to help differently-abled people beyond the security checkpoint.
  • To get to BOS from downtown Boston, “Take the T.” This means to take the public transportation options offered by the MBTA. These include the Silver Line rapid transit buses, Blue Line subway, and the MTBA ferries.
  • On your way out of STL, consider passing through Terminal 1, where you can hear the live music of the Terminal 1 piano and piano player. Installed as a part of an arts and culture initiative, this ever-present musical performance is also meant to add delight and relaxation to your journey.
See more tips

Prefer to fly non-stop from Boston to St. Louis?

Find which airlines fly direct from Logan Intl to Lambert-St Louis, which days they fly and book direct flights.

Nonstop departures

Boston Logan Intl to Lambert-St Louis

Monday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

Tuesday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

Wednesday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

Thursday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

Friday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

Saturday

Southwest

Southwest

Sunday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

See more direct flights

Nonstop returns

Lambert-St Louis to Boston Logan Intl

Monday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

Tuesday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

Wednesday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

Thursday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

Friday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

Saturday

Southwest

Southwest

Sunday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

See more direct flights
See more direct flights

Top 5 airlines serving from Boston to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Boston to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10561 reviews
8.2Boarding
7.9Comfort
8.0Entertainment
8.6Crew
7.4Food
Airline reviews

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

6.0 GoodPeter, May 2024SLC - HNL
Read more about Delta reviews

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

They were an hour late and they didn’t have my wheelchair for me

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

The 1st class male crew member was very pleasant - the short female with round glasses , maybe in 50’s had no personality- never spoke when delivering my food, drink, & never smiled the whole trip! In fact looked annoyed when the boarding proses was happening- I would never hire this woman - unfriendly . Have never dealt with a crew member like her-

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

They did a fine job. Can't wait to use Delta in the future.

I had back trouble prior to my flight and everyone was great about helping me.

My tv was broken on the flight which is disappointing when you pay for a seat and expect a service

Always delays from Boston to Salt lake but this time was very long. Don’t understand while they board the passengers and then make them sit in the plane

Service for food to our seat was a bit slow. Snack choices were just pretzels or baked chips. My seat cushion was not attached. Other than Barbie, video choice were not very good or current.

After we landed, we were held on the plane for 30 minutes. There was no one at the gate once we landed and we forced to sit on a plan that had already over an hour delayed.

almost 4 hour delay as they over booked and had to wait for 8-10 volunteers to agree to travel next day.

Old plane. No outlets for laptop or phone. Seats worn out. Area around seat dirty.

I loved the flight and the crew. It was comfortable and smooth.

The crew was openly hostile and condescending to the customers. They spent the majority of that time in the rear talking and seemed really agitated when people asked questions. I heard five different people told that the information they requested was in the handout or safety brief.

ticketing issues caused many customers to have to go back to check in after waiting in security, then go through security line again.

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

Delayed so that missed connecting flight. Connecting flight was also delayed on the tarmac but they closed the gate before the rescheduled time.

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Took off over an hour late with multiple mechanical issues. Gate agent in Dallas was lazy and was slow as molasses. Had a line 10 people long. Spirit bad..

The flight was short. However, my bag was delayed and was put on another flight.

Flight attendant was incredible. Very efficient, friendly and pleasant. Patricia was one of the best I have ever seen. Please give her a big raise!

Flight delayed, boarding time kept changing, not good. Nee firm information given each time.

delayed delayed delayed. was supposed to have a 2 hour layover and very nearly missed my connection.

Despite a bumpy flight the pilot was great. The rest of the crew on the other hand couldn’t care less if a passenger would colapse and die. Horrible service, robot like, lifeless…

No service due to turbulence. No entertainment on this type of aircraft. But nice old comfortable seats.

Great service, on time, professional experience. Great landing under challenging crosswind conditions at BWI. I made my connection in Charlotte despite the plane getting stuck finding a gate to park in on arrival. The only glitch -- the Airbus 320 from CLT to BWI was quite comfortable, but the larger 321 from Logan to Charlotte had minimal leg/knee room. I get that it's a high volume route but dang, couldn't even open my laptop it was so tight

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Good for the price. My only complaint is that the pilot should keep the air flowing while passengers are waiting to getting out of airplane.

Plane could have been more on time. More leg room .

I arrived 1 hour prior to boarding, and they said I was too late for a domestic flight. First time I heard that :-(

Check in online was easy. Seats aren’t very comfortable

Fecal matter in seat back pocket. Presumably from a kids diaper.

Worst airline to travel with. They treat you like a prisoner in a jailhouse barking out orders and threats. Nickle and dime you to the same price or higher than a respectable airline like one of the big 3 . Might as well fly with standard airlines

Well I mean u get what u pay for so 🤷‍♂️

Over an hour delay in departure but I was notified beforehand. Another delay on tarmac upon arrival at LGA. We ended up departing the plane almost 2 hours later than expected

I fly Frontier because it’s affordable. I understand that the seats are tight and not the most comfortable…but that’s part of it. The problem with this flight was that there was a group of travelers directly behind me at the back of the plane who were ridiculously loud and obnoxious the entire flight. I’m pretty sure they were drunk and I could periodically smell an odd odor that I believe was one of them using a smokeless vape pen. The stewards had to remind them to keep quiet during the pre-flight instruction, but that was it. They never said another thing to them for the rest of the flight. It was a miserable.

Book cheap flights from Boston to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Boston to St. Louis found on KAYAK in the last 72 hours.
6/11Tue
1 stopSpirit Airlines
9h 13mBOS-STL
$47
6/12Wed
2 stopsSpirit Airlines
20h 50mBOS-STL
$69
6/5Wed
1 stopFrontier
22h 51mBOS-STL
$78
6/5Wed
1 stopFrontier
22h 51mBOS-STL
$79
6/4Tue
1 stopDelta
4h 44mBOS-STL
$98
6/12Wed
nonstopAmerican Airlines
3h 07mBOS-STL
$156
6/5Wed
nonstopAmerican Airlines
3h 07mBOS-STL
$159
6/12Wed
2 stopsUnited Airlines
7h 56mBOS-STL
$176
6/2Sun
1 stopDelta
7h 03mBOS-STL
$199
11/2Sat
2 stopsUnited Airlines
9h 40mBOS-STL
$224

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Last minute flights from Boston to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Boston to St. Louis that are departing in the next 10 days.
5/24Fri
multi-stopUnited Airlines
4h 56mBOS-STL
6/4Tue
multi-stopUnited Airlines
7h 08mSTL-BOS
$396
5/24Fri
multi-stopDelta
8h 19mBOS-STL
5/27Mon
multi-stopDelta
5h 22mSTL-BOS
$436
5/24Fri
multi-stopUnited Airlines
5h 37mBOS-STL
5/27Mon
multi-stopUnited Airlines
4h 59mSTL-BOS
$587
5/25Sat
multi-stop
33h 38mBOS-STL
5/27Mon
multi-stop
26h 24mSTL-BOS
$605
5/25Sat
nonstopAmerican Airlines
3h 17mBOS-STL
5/28Tue
multi-stopAmerican Airlines
6h 10mSTL-BOS
$675
5/25Sat
nonstopAmerican Airlines
3h 17mBOS-STL
5/27Mon
nonstopAmerican Airlines
2h 49mSTL-BOS
$690
5/24Fri
multi-stopSpirit Airlines
17h 36mBOS-STL
5/28Tue
multi-stopSpirit Airlines
24h 20mSTL-BOS
$697
5/24Fri
multi-stopSpirit Airlines
17h 36mBOS-STL
5/28Tue
multi-stopSpirit Airlines
23h 04mSTL-BOS
$715
5/24Fri
multi-stopAlaska Airlines
24h 00mBOS-STL
5/27Mon
multi-stopAlaska Airlines
23h 20mSTL-BOS
$1,090
5/24Fri
multi-stopAlaska Airlines
24h 00mBOS-STL
5/27Mon
multi-stopAlaska Airlines
15h 54mSTL-BOS
$1,235

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Boston - St. Louis Flights

Departure:

Boston (BOS)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Boston

Cabin classes:

$921
$1,111
$1,420
$342