STL - SAN

$54 Find Cheap Flights from St. Louis to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to San Diego departing on 12/16. 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.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to San Diego, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to San Diego, as well as popular online travel agencies
In the last 7 days travelers have searched 47,946,175 times on KAYAK, and here is why:

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Cheap Flight Deals from St. Louis to San Diego (STL-SAN)

 
These are the cheapest deals for flights from St. Louis to San Diego 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 St. Louis to San Diego

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

Recent one-way flight deals from St. Louis to San Diego

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

Recent last minute flight deals from St. Louis to San Diego

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

Recent direct flight deals from St. Louis to San Diego

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

Cheap bus & train deals from St. Louis to San Diego

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

All round-trip flight deals to San Diego

The cheapest plane tickets to San Diego found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
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12:00 pm - 9:16 amSTL-SAN
23h 16m1 stop
6:25 am - 9:06 amSAN-STL
24h 41m1 stop
$136Frontier
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목, 1월 2 - 화, 1월 7
6:46 pm - 10:58 amSTL-SAN
18h 12m1 stop
6:25 am - 8:13 amSAN-STL
23h 48m1 stop
$138Frontier
Find Deal
금, 12월 6 - 화, 12월 10
2:29 pm - 6:24 pmSTL-SAN
5h 55m1 stop
10:36 pm - 9:46 amSAN-STL
9h 10m1 stop
$247American Airlines
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목, 12월 12 - 일, 12월 15
2:17 pm - 6:23 pmSTL-SAN
6h 06m1 stop
4:35 pm - 12:06 amSAN-STL
5h 31m1 stop
$276American Airlines
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월, 12월 23 - 월, 12월 30
1:45 pm - 7:53 pmSTL-SAN
8h 08m2 stops
7:35 am - 6:09 pmSAN-STL
8h 34m1 stop
$281United Airlines
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금, 1월 24 - 금, 1월 31
1:39 pm - 7:53 pmSTL-SAN
8h 14m2 stops
3:36 pm - 12:28 amSAN-STL
6h 52m1 stop
$302United Airlines
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수, 12월 11 - 목, 12월 19
6:04 pm - 11:41 pmSTL-SAN
7h 37m1 stop
6:15 am - 2:49 pmSAN-STL
6h 34m1 stop
$368Delta
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월, 12월 23 - 월, 12월 30
5:50 pm - 10:30 pmSTL-SAN
6h 40m1 stop
8:45 am - 2:10 pmSAN-STL
3h 25mnonstop
$373Southwest
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일, 1월 26 - 토, 2월 1
8:05 pm - 10:05 pmSTL-SAN
4h 00mnonstop
3:20 pm - 11:05 pmSAN-STL
5h 45m1 stop
$393Southwest
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금, 1월 3 - 화, 1월 7
6:59 pm - 11:54 pmSTL-SAN
6h 55m1 stop
10:40 pm - 8:52 amSAN-STL
8h 12m1 stop
$395Delta
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월, 3월 17 - 토, 3월 22
6:46 pm - 11:49 pmSTL-SAN
7h 03m1 stop
$54Frontier
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월, 12월 16
7:09 pm - 11:52 pmSTL-SAN
6h 43m1 stop
$61Frontier
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수, 1월 22
7:20 am - 12:25 pmSTL-SAN
7h 05m1 stop
$109American Airlines
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토, 12월 14
6:04 am - 1:00 pmSTL-SAN
8h 56m1 stop
$138Delta
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화, 12월 24
1:39 pm - 7:53 pmSTL-SAN
8h 14m2 stops
$143United Airlines
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화, 12월 17
4:45 pm - 6:55 pmSTL-SAN
4h 10mnonstop
$174Southwest
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일, 2월 16
1:39 pm - 7:53 pmSTL-SAN
8h 14m2 stops
$178United Airlines
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토, 12월 14
10:20 am - 12:30 pmSTL-SAN
4h 10mnonstop
$195Southwest
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월, 1월 20
6:00 am - 10:55 amSTL-SAN
6h 55m1 stop
$199Delta
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일, 2월 23
6:23 pm - 10:45 pmSTL-SAN
6h 22m1 stop
$219American Airlines
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목, 3월 13
5:38 pm - 11:56 pmSTL-SAN
8h 18m1 stop
6:25 am - 8:13 amSAN-STL
23h 48m1 stop
$243Frontier
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월, 11월 25 - 목, 12월 19
5:38 pm - 7:33 amSTL-SAN
15h 55m1 stop
6:25 am - 12:06 amSAN-STL
15h 41m1 stop
$281Frontier
Find Deal
월, 11월 25 - 금, 11월 29
5:38 pm - 11:56 pmSTL-SAN
8h 18m1 stop
8:23 am - 11:59 pmSAN-STL
13h 36m2 stops
월, 11월 25 - 금, 11월 29
9:20 am - 6:40 amSTL-SAN
23h 20m3 stops
6:06 pm - 7:55 pmSAN-STL
23h 49m3 stops
월, 11월 25 - 목, 12월 19
8:05 pm - 10:05 pmSTL-SAN
4h 00mnonstop
4:10 pm - 12:40 amSAN-STL
6h 30m1 stop
$759Southwest
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월, 11월 25 - 목, 12월 19
7:00 am - 4:20 pmSTL-SAN
11h 20m2 stops
6:56 pm - 4:56 pmSAN-STL
20h 00m1 stop
$807Alaska Airlines
Find Deal
금, 11월 22 - 목, 11월 28
7:00 am - 4:20 pmSTL-SAN
11h 20m2 stops
12:40 pm - 4:38 pmSAN-STL
25h 58m2 stops
$812Alaska Airlines
Find Deal
금, 11월 22 - 목, 11월 28
8:40 am - 1:50 pmSTL-SAN
7h 10m1 stop
6:56 pm - 12:43 pmSAN-STL
15h 47m2 stops
$846United Airlines
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금, 11월 22 - 목, 11월 28
10:10 am - 7:40 pmSTL-SAN
11h 30m2 stops
6:56 pm - 12:43 pmSAN-STL
15h 47m2 stops
$851United Airlines
Find Deal
목, 11월 21 - 목, 11월 28
8:05 pm - 10:05 pmSTL-SAN
4h 00mnonstop
10:35 am - 5:55 pmSAN-STL
5h 20m1 stop
$1,002Southwest
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목, 11월 21 - 목, 11월 28
4:45 pm - 6:55 pmSTL-SAN
4h 10mnonstop
9:30 am - 2:55 pmSAN-STL
3h 25mnonstop
$410Southwest
Find Deal
금, 2월 14 - 수, 3월 5
6:30 am - 8:35 amSTL-SAN
4h 05mnonstop
6:50 am - 12:20 pmSAN-STL
3h 30mnonstop
$423Southwest
Find Deal
월, 12월 23 - 월, 12월 30
5:20 pm - 7:25 pmSTL-SAN
4h 05mnonstop
7:00 am - 12:30 pmSAN-STL
3h 30mnonstop
$466Southwest
Find Deal
수, 3월 12 - 일, 3월 16
8:05 pm - 10:05 pmSTL-SAN
4h 00mnonstop
6:15 pm - 11:45 pmSAN-STL
3h 30mnonstop
$480Southwest
Find Deal
금, 12월 13 - 일, 12월 15
1:00 pm - 3:10 pmSTL-SAN
4h 10mnonstop
8:40 am - 2:10 pmSAN-STL
3h 30mnonstop
$486Southwest
Find Deal
토, 3월 8 - 토, 3월 15
7:20 pm - 9:25 pmSTL-SAN
4h 05mnonstop
6:10 pm - 11:40 pmSAN-STL
3h 30mnonstop
$490Southwest
Find Deal
월, 3월 17 - 금, 3월 21
11:00 am - 1:00 pmSTL-SAN
4h 00mnonstop
6:25 pm - 11:55 pmSAN-STL
3h 30mnonstop
$496Southwest
Find Deal
화, 12월 24 - 토, 12월 28
6:30 am - 8:35 amSTL-SAN
4h 05mnonstop
6:45 pm - 12:15 amSAN-STL
3h 30mnonstop
$504Southwest
Find Deal
금, 12월 20 - 금, 12월 27
7:20 pm - 9:25 pmSTL-SAN
4h 05mnonstop
8:40 am - 2:10 pmSAN-STL
3h 30mnonstop
$588Southwest
Find Deal
월, 3월 17 - 토, 3월 22
11:00 am - 1:00 pmSTL-SAN
4h 00mnonstop
6:25 pm - 11:55 pmSAN-STL
3h 30mnonstop
$613Southwest
Find Deal
화, 12월 31 - 토, 1월 4

Flights from St. Louis to San Diego - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to San Diego 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 St. Louis to San Diego?

The average price of all flights from St. Louis to San Diego clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from St. Louis to San Diego, look for departures on Tuesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from San Diego, Tuesday is the cheapest day to fly and Monday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to San Diego, 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 St. Louis to San Diego is April, where tickets cost $235 on average. On the other hand, the most expensive months are December and March, where the average cost of tickets is $444 and $369 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to San Diego, 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 St. Louis to San Diego, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 60 days before departure.

Good to know

Low season

January

High season

June

Cheapest flight

$54
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from St. Louis to San Diego

When to book flights from St. Louis to San Diego

Are your dates flexible? Find out the best times to travel from St. Louis to San Diego 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 St. Louis to San Diego

  • How can I fly from STL to SAN?

    Southwest operates a non-stop flight from STL to SAN. Airlines such as Frontier, United Airlines, Delta, and American Airlines operate one-stop flights from STL to SAN. Some of the layover cities include Dallas (DFW), Denver (DEN), Minneapolis (MSP), Las Vegas (LAS), and Houston (IAH). American Airlines and United Airlines are among the carriers that operate flights from STL to SAN with two layovers.

  • Does STL have nursing rooms?

    Yes. STL has installed Lactation Suites in Gates A10, C9, and E33. Each unit has a comfortable club chair with a full back and a movable arm table, a sink with counter space, and power outlets.

  • Does STL have a USO?

    Yes. There are two USO lounges at STL, one in Terminal 1 at Baggage Claim M6. This lounge is open 24h. The other is in Terminal 2 near Exit 11 by Baggage Claim, open from 7 am until 6 pm. Some amenities in these lounges include showers, a sleeping area with beds, a library, a children's play area, snacks and beverages, computers, Wi-Fi, TV, comfortable seating, and more.

  • How do I get from SAN into downtown San Diego?

    From Lindbergh Field at Terminal 1 at STL, you can catch a San Diego Metro Transit bus #992 into downtown San Diego at Broadway and State Street. This trip takes about 18min and buses depart about every 20min. Taxis and shuttles can get you from STL to downtown San Diego in less than half the time but at about twice the price of a bus.

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

    In the last 3 days, the lowest price for a flight from St. Louis to San Diego was $54 for a one-way ticket and $136 for a round-trip.

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

    A passport is not required to fly from St. Louis to San Diego.

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

    American Airlines, and Alaska Airlines offer inflight Wi-Fi service on the St. Louis to San Diego flight route.

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

    The Boeing 737-700 Passenger/BBJ1 (winglets) is the aircraft model that flies most regularly on the St. Louis to San Diego flight route.

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

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

  • Which is the best airline for flights from St. Louis to San Diego, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from St. Louis to San Diego are Southwest and Delta. With an average price for the route of $487 and an overall rating of 8.1, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $316 and an overall rating of 8.0.

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

    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 St. Louis to San Diego.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from St. Louis 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 St. Louis to San Diego?

    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 San Diego with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and SAN 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 St. Louis to San Diego?

    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 San Diego from St. Louis 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 St. Louis to San Diego

  • Looking for a cheap flight? 25% of our users found flights on this route for $308 or less one-way and $513 or less round-trip.
  • The St. Louis Lambert International Airport (STL) is a hub for Cape Air and Air Choice One. San Diego International Airport (SAN) is a focus city for Southwest Airlines and Alaskan.
  • You can park your car at STL long-term before your trip to SAN at B Lot and D Lot. Free shuttles run every 10min between these lots and the terminals. There are garages and surface lots closer to the terminals, within walking distance, but these parking options are more expensive. You can check the STL homepage to see what availability there is in each of the lots.
  • At the Baggage Claim in Terminals 1 and 2 at SAN, passengers can take advantage of Traveler’s Aid if they need to. This non-profit facility is open from 8 am until 11 pm, and it provides aid to travelers who are stranded or distressed. Traveler’s Aid can assist you with issues such as transportation assistance, emergency housing, lost or stolen money, and more.
  • STL has a total of six animal relief areas for travelers who have a pet or service animal with them. The animal relief stations in the terminal can be found at Gates E4, A16, C24, and E40. The relief areas that are outside can be accessed through Exit 6 in Terminal 1 and Exit 15 in Terminal 2.
  • STL has an airport and travel-themed kids' play area, the St Louis International Playport, at Gate 2 on Concourse C. At this indoor playground, kids can play with a kid-sized plane, car, van, and truck. There is also a control tower with a sliding board, a pretend luggage conveyor belt, a pretend security area with a pretend X-ray machine, and a play-car rental counter.
See more tips

Prefer to fly non-stop from St. Louis to San Diego?

Find which airlines fly direct from Lambert-St Louis Airport to San Diego Airport, which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to San Diego

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Nonstop returns

San Diego to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights
See more direct flights

Top 5 airlines serving from St. Louis to San Diego

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to San Diego. 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 St. Louis to San Diego? 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.
8.1
SouthwestOverall score based on 5015 reviews
8.2Boarding
8.7Crew
8.1Comfort
7.7Entertainment
7.2Food
Airline reviews

Exceptional crew! Friendly and professional. Pleasant attitude and treated everyone with respect.

10.0 ExcellentAnonymous, Oct 2024STL - MSY
Read more Southwest reviews

Exceptional crew! Friendly and professional. Pleasant attitude and treated everyone with respect.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a hell hole of an airport. It is the new LaGuardia. Everything Cobbled together. Security gates closed. Terri directional signage

I will be flying again Southwest Airlines. Friendly crew, comfortable and affordable.

The plane arrived 25 minutes late, and the Wi-Fi was slower than it usually is.

Forget beverage, they didn't even have water for half the passangers?

Can not wait for seating change to reduce the amount of pre boards - it’s disheartening the abuse. And then then deplaning

The crew was nice. Boarding sucked. Instead of loading from the back to the front people just sat wherever and you had to wait for them to move to get to a seat. And the flight was 25 minutes delayed.

I boarded last because of my boarding assignment and was given a middle seat at the back of the plane. I’m 6”1” so it was really tight. I wish I just had a seat assignment instead of a general boarding group. My bag was way at the front and my seat at the back. Was never offered a beverage and had no room to move.

The flight was promptly on schedule and Southwest delivered everything they promised. No excuses for any shortfalls just 100% ownership of their responsibilities and business. The boarding and seating policy is a complete shambles. What started out as a great idea when Southwest first hit the market has been turned into a disaster due to the lack of integrity in many of the people who fly Southwest and take advantage of Southwest generosity at the expense of their fellow passengers.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Great. Flight departed early and arrived early. Deplaning and baggage claim ww were quick.

They separated our seats and moved us to the back of the plane. Hundreds of dollars and thousands of miles used and this was my platinum member experience.

AC barely worked on a 50 minute flight. It was very warm the whole flight. Flight was very bumpy and hard landing.

Got on the plane and then needed to deboard the plane because they didn’t have any pilots?

The flight was canceled two hours before departure, it took over five hours to rebook us on another flight.

Rough day of travel all the way around. Wrong info given to us multiple times and mistakes in their booking making our trip 10 hours longer than planned. I’m bummed because I fly Delta all the time and love them. Mistakes happen. Just bummed that this was a rare trip our whole family was traveling together.

Meh. A late flight meant I missed my connections, and a 2pm LAX arrival turned into gettin in after midnight.

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Cabin was pitch black, even during meal service. The reading lights for seat 2E/F did not work, and seat 2E did not recline.

This was a 5 hour flight with no entertainment and with a snack being provided (pretzels and fruit bar), which are both high in carbs and sugar. Nuts would have been a better choice.

Was realllly smooth. It was delayed but we were well informed.

Good plane, crew, and flight. Boarding was a bit chaotic. Bathrooms were unacceptable. United DESPERATELY needs a new terminal at IAD.

Haven’t used United in a while. Was surprised with the free blanket and earphones. Service was great. Huge plane. 9/.row.

Delayed by 2.5hrs any longer and they would’ve had to honour their own policy for breaking their own rules and regs. Not cool, especially when I have an infant child that needs to stay on a routine and they get schedules.

To san Francisco it was ok. From sf to Manila it was horrible

Awful, rude staff. Their abrasive comments are unnecessary. Most seek a frictionless experience and will cooperate if you ask. Additional childish bullying of customers is not acceptable or tolerated. We had the same problem with our departure flight. We will never fly United again.

Very poor the plane itself was really old, slight smell that couldn’t be named. I didn’t even get a boarding pass UNTIL AFTER clearing security! Even then, they said when I get to my connected flight I’ll get my 2nd boarding pass there! A bit ridiculous!

No cooked food. Crew was not friendly and not that helpful

My boarding pass wouldn't pull up in the app very easily and had to really dig through my email. That caused a delay in TSA..

Overall boarding and debarking is a joke. I dont even bring luggage anymore on trips because you can never allow them to be place then in the overhead bin or you have to pay or you check them which is even worse having to wait for your luggage on the tarmac.

RE Food: Wish there was a choice for No Rating. Flew from Honolulu to Los Angeles on a Red-Eye flight (11:00 pm to 7:30 am). Other than a package of cookies with a beverage choice offered soon after take-off, and a beverage choice shortly before landing, no other food choices were offered. Everyone slept or rested for most of the trip. Nothing to rate. RE Entertainment: Everyone was sleeping most of the flight. Only saw one passenger watch about 30 minutes of entertainment on his iPad. I never attempted to access any entertainment options.

Baby cried a lot. Nothing anyone could do about it. Just part of flying.

For coast to coast travel the A321 and even the NEO, even in first class will never be excellent. That would take a B787 or 777 to accomplish.

The flight crew was fantastic! Which the seats had a small TV.

The foot ottoman cushion was missing on my business class seat.. the hydraulics is on its last leg & seat cushions do not have support or paddling. Heavily dented by butts

also wi-fi never worked attendant said satellite coverage is spotty over water ..... but we were over land!

I was unhappy with having the seat I chose changed at the last minute. I was moved to an aisle seat which did not recline and was next to the bathroom. The bathroom odors made the flight entirely unpleasant. Having carefully chosen my seat months before I was not pleased with my AA experience. In addition, they ran out of tea during flight service, really?

Dallas Hub. American taking ownership for their screwups instead of blaming their contractors and customers, trading their people, their call in service, reservation agents and their ticketing process. Make sure wheelchairs are available especially when the request is in their record.

Booked direct in July '24. Turned into a 14 hr layover (both ways) in Denver. My 5 day vaca turned into a 1 day . Not good, BUT,... Thank you for the people @ Frontier who were professionally friendly & approachable.

Stop changing gates at sfo. When you are elderly going back for it’s not fun.

We understand and comply with Frontier’s bag sizes. We’ve had some problems in past while having to await other passengers who do not understand the baggage restrictions or have not prepaid and that is usually our biggest concern (others delaying us) with flying Frontier. Flying OUT of ONT, however, has always been a great experience. I’ve also noted even on delayed Frontier flights very knowledgeable pilots who manage expectations well.

There was no easy way to check in. I don't want to install an app to checkin. I will use alaska from now on because they have a web check in method that is easy.

The crew was ghetto lol I felt like I was on an inner city field trip

Horrible! The short distance flight ended up taking 5 hrs! There was a 3 hr delay for the flight to take off and there was a 70 min wait on the tarmac for some bogus reason that the pilot said the gate he was supposed to board was taken up. After a 30 min wait he said the plane that was supposed to push out of the gate called a medical emergency and 40 min later he ended up boarding another gate. For the initial 3 hr delay there was no information/alert about the gate or delay in the app or the boards up until the boarding time and even beyond! Had to walk all the way to the end of the terminal to find the frontier staff to ask what was going on. Avoid this airline at all costs! If you have carryon bags or checked bags , their prices come equivalent to the prices of more reliable airlines. They are the worst in timeliness at 60% (reported as delayed) this year (check the data) by a high margin even compared to the second worst airline. If you are ok with having a miserable flight experience with the odds close to flip of a coin, feel free to try them. If you value your time , money and flying experience, stay away.

There was nothing to like, flight delayed had to move to different departure areas, disorganized to say the leasr

Delayed for two hours due to trivial issues. No reimbursment. Also on arrival further delay due to terminal malfunction.

Our flight was canceled for no known reason. We weren’t told until we were checking in at 5:00 am. This was after our last flight with Frontier where we sat on the plane for three hours (not an exaggeration) before we took off because of a mechanical issue. We won’t be flying Frontier again.

Allowed me to chose my seat without extra charge (I purchased full-price ticket) and boarding was in group1. Didn't even serve water.

Book cheap flights from St. Louis to San Diego

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to San Diego found on KAYAK in the last 72 hours.
12/16
1 stopFrontier
7h 03mSTL-SAN
$54
1/22
1 stopFrontier
6h 43mSTL-SAN
$61
12/14
1 stopAmerican Airlines
7h 05mSTL-SAN
$109
12/24
1 stopDelta
8h 56mSTL-SAN
$138
12/17
2 stopsUnited Airlines
8h 14mSTL-SAN
$143
2/16
nonstopSouthwest
4h 10mSTL-SAN
$174
12/14
2 stopsUnited Airlines
8h 14mSTL-SAN
$178
1/20
nonstopSouthwest
4h 10mSTL-SAN
$195
2/23
1 stopDelta
6h 55mSTL-SAN
$199
3/13
1 stopAmerican Airlines
6h 22mSTL-SAN
$219

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Last minute flights from St. Louis to San Diego

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 St. Louis to San Diego that are departing in the next 10 days.
11/25
multi-stopFrontier
8h 18mSTL-SAN
12/19
multi-stopFrontier
23h 48mSAN-STL
$243
11/25
multi-stopFrontier
15h 55mSTL-SAN
11/29
multi-stopFrontier
15h 41mSAN-STL
$281
11/25
multi-stop
8h 18mSTL-SAN
11/29
multi-stop
13h 36mSAN-STL
$561
11/25
multi-stop
23h 20mSTL-SAN
12/19
multi-stop
23h 49mSAN-STL
$562
11/25
nonstopSouthwest
4h 00mSTL-SAN
12/19
multi-stopSouthwest
6h 30mSAN-STL
$759
11/22
multi-stopAlaska Airlines
11h 20mSTL-SAN
11/28
multi-stopAlaska Airlines
20h 00mSAN-STL
$807
11/22
multi-stopAlaska Airlines
11h 20mSTL-SAN
11/28
multi-stopAlaska Airlines
25h 58mSAN-STL
$812
11/22
multi-stopUnited Airlines
7h 10mSTL-SAN
11/28
multi-stopUnited Airlines
15h 47mSAN-STL
$846
11/21
multi-stopUnited Airlines
11h 30mSTL-SAN
11/28
multi-stopUnited Airlines
15h 47mSAN-STL
$851
11/21
nonstopSouthwest
4h 00mSTL-SAN
11/28
multi-stopSouthwest
5h 20mSAN-STL
$1,002

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Everything you need to know for your flight from St. Louis to San Diego

Information on your arrival and departure airports

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