SJU - STL

$57 Find Cheap Flights from San Juan 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 San Juan to St. Louis departing on 12/12. 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

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to St. Louis, 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 San Juan to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 46,646,933 times on KAYAK, and here is why:

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Cheap Flight Deals from San Juan to St. Louis (SJU-STL)

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

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from San Juan to St. Louis.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:03 pm - 11:24 pmSJU-STL
10h 21m1 stop
5:02 pm - 7:31 pmSTL-SJU
24h 29m1 stop
$152Frontier
Find Deal
Thu, Dec 5 - Mon, Dec 9
9:49 pm - 11:31 pmSJU-STL
27h 42m1 stop
5:05 pm - 9:35 amSTL-SJU
14h 30m1 stop
$175Frontier
Find Deal
Thu, Feb 6 - Tue, Feb 11
5:05 pm - 11:24 pmSJU-STL
8h 19m1 stop
11:31 am - 12:37 pmSTL-SJU
23h 06m1 stop
Thu, Dec 5 - Mon, Dec 9
8:30 pm - 11:31 pmSJU-STL
29h 01m2 stops
5:05 pm - 7:48 pmSTL-SJU
24h 43m1 stop
Tue, Jan 28 - Tue, Feb 4
2:25 pm - 11:46 pmSJU-STL
11h 21m2 stops
6:00 am - 5:30 pmSTL-SJU
9h 30m2 stops
$264American Airlines
Find Deal
Thu, Feb 6 - Tue, Feb 11
8:15 am - 4:06 pmSJU-STL
9h 51m2 stops
12:00 pm - 11:56 pmSTL-SJU
9h 56m2 stops
$269American Airlines
Find Deal
Thu, Feb 13 - Tue, Feb 18
12:55 pm - 11:38 pmSJU-STL
11h 43m1 stop
6:00 am - 1:30 pmSTL-SJU
6h 30m1 stop
$303Delta
Find Deal
Thu, Apr 24 - Tue, Apr 29
2:05 am - 10:47 amSJU-STL
10h 42m1 stop
6:15 am - 4:36 pmSTL-SJU
8h 21m1 stop
$354United Airlines
Find Deal
Tue, Jan 14 - Tue, Jan 21
2:05 am - 10:47 amSJU-STL
10h 42m1 stop
6:15 am - 4:36 pmSTL-SJU
8h 21m1 stop
$393United Airlines
Find Deal
Wed, Feb 5 - Tue, Feb 11
7:00 am - 6:02 pmSJU-STL
12h 02m2 stops
6:00 am - 7:39 pmSTL-SJU
12h 39m2 stops
$3,126Delta
Find Deal
Wed, Apr 9 - Mon, Apr 14

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

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

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

What is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Juan Luis Munoz Marin Intl Airport 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 San Juan Luis Munoz Marin Intl Airport to St. Louis is February, where tickets cost $341 on average. On the other hand, the most expensive months are June and August, where the average cost of tickets is $550 and $484 respectively.

Can I save money by flying with a layover from San Juan Luis Munoz Marin Intl Airport to St. Louis?

The average price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.
No, with an average price for the route of $267, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from San Juan Luis Munoz Marin Intl Airport to St. Louis?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San Juan Luis Munoz Marin Intl Airport 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 San Juan Luis Munoz Marin Intl Airport to St. Louis, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 65 days before departure.

Good to know

Low season

January

High season

December

Cheapest flight

$57
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from San Juan to St. Louis

When to book flights from San Juan to St. Louis

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

  • What is the cheapest flight from San Juan Luis Munoz Marin Intl Airport to St. Louis?

    In the last 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to St. Louis was $57 for a one-way ticket and $152 for a round-trip.

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

    Yes

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

    San Juan and St. Louis are both served by 1 main airport. You will leave San Juan from San Juan Luis Munoz Marin Intl and will be arriving at Lambert-St Louis.

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

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the San Juan to St. Louis flight route.

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

    You can catch a nonstop flight from San Juan to St. Louis on Saturday.

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

    The two airlines most popular with KAYAK users for flights from San Juan to St. Louis are Delta and United Airlines. With an average price for the route of $373 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 $554 and an overall rating of 7.4.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from San Juan 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 San Juan 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 San Juan with another airline. Booking your flights between San Juan 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 San Juan 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 San Juan up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

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

Find which airlines fly direct from San Juan Luis Munoz Marin Intl Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Nonstop departures

San Juan Luis Munoz Marin Intl to Lambert-St Louis

Saturday

Southwest

Southwest

See more direct flights

Nonstop returns

Lambert-St Louis to San Juan Luis Munoz Marin Intl

Saturday

Southwest

Southwest

See more direct flights
See more direct flights

Top 4 airlines serving from San Juan to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from San Juan 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 San Juan 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 8755 reviews
7.9Entertainment
7.9Comfort
8.2Boarding
8.5Crew
7.3Food
Airline reviews

I sat in comfort plus. It was fine. Seats were comfortable. I got drinks and snacks.

8.0 ExcellentAndrew, Nov 2024MCO - LGA
Read more Delta reviews

I sat in comfort plus. It was fine. Seats were comfortable. I got drinks and snacks.

Crew was nice. Flight was timely. Seats could be better as well as the food considering it’s first class.

Left on time and arrived early this extending our 31 minute transfer. Bags made it also!

Good and consistent Printer in lounge did not work for me :(

Most of my discomfort was going through TSA. However, the Delta seats had inadequate leg room and I tried my very best to connect to the wi-fi and it was a cumbersome process that finally gave me the info that I needed to sign in AFTER I had completed the flight...Why make it so difficult to use? That said I really really appreciate the pilot taking a little extra time to avoid a bad storm area and both landings in Atlanta and Orlando were flawless to my delight!!!

Delayed in taking off because no flight crew. The in seat entertainment was working properly.

I love my flight attendant Faith, always smiles always helpful. She makes the flight experience wonderful thank you

My return flights were changed by the airline and my preferred seat selection with extra legroom was not transferred to the new flights

I upgraded to first class only to find out that I still had no access to the sky lounge without a sky miles card or AmEx (something that should be emphasized outside of the fine print!) Also, no food or drink service provided during the flight, so I basically paid 4x more just for “free” checked baggage and a bigger seat. Not worth it.

Very dissatisfied with the fact that I had upgraded to first class for the second part of my trip only to find out that the lounge was still not available to me, as well as not having any food or drink service on the flight due to weather, so I lost out more than what I paid for.

There was no USB plug in my section of the plane. So I could not charge my phone. Also, there was no screen to watch movie or anything like that. Wish I had known that in advance, I would’ve brought my iPad.

Staff was generally seeming stressed out and was a bit rude and slow. Plane left late. Pilot was very well-spoken.

Service was great, we had bad departure and bad arrival due to weather, but that we cannot control. Hats off to the pilot!

The flight attendants were unhelpful. It was a packed flight, and usually a flight attendant would help find a spot in the bin for your carry on or shift things around. Neither made any effort to do so. Also, I had to then check my bag. I was told it would be on the carousel in YYZ, but it came up on the jetway. So lucky I saw others standing around for their bags. I would have walked straight past this and on to the carousel. They could have at least told me that they had given me wrong information. Very unsatisfactory.

Made all groups except 2 check despite ample bin space. Inflight WiFi and entertainment didn’t work most of the time.

The check-in process is not the best They should have agents in site to help with any problem especially a rebook. Why does one have to get on the phone when there were at least 8 agents around that could have help?! Flying is stressful as it is and having someone willing to do their customer service will ease some of the stress.

The crew was outstanding. And the food was surprisingly good. The chicken and the pasta dish were both delicious and I was supposed with a pizza twist near Landing. We hit a lot of turbulence and the crew was calm and kind. Loved the TV in screen. Tons of new releases.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

boarding was uneventful. Snack was pathetic. A tiny fruit bar. Entertainment was limited to just select movies on your own tablet or phone. No live TV. I recently flew Jetblue and they had unlimited snacks and live satellite TV the entire flight. My seat was an exit seat, 20A. It was super uncomfortable. It felt cramped and the middle seat was taken up by a large woman who pushed into my shoulder and arm. Horrible flight.

They canceled our flight and left us stranded to figure it out

Finding the gate was very confusing. Our boarding pass listed one gate and the staff verbally told us a different gate.

Plenty of overhead space but forced to check my carry-ons both legs

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

It was as expected for such a short flight. No complaints

Great thanks - a whole row to myself. Good food but film selection not great.

The departing flight from Newark to Charlotte was fine. It was the returning flight from Charlotte to Newark that was awful. We had scheduled an 8:35pm return flight time. We got delayed TEN times all the way to 5am in the morning! We were told over 4 different excuses as to why the flight kept getting delayed. First it was the flight crew needed to rest, then it was something technical with the plane, then it was something with air traffic control, and finally it was because they couldn’t find a captain and had to wait until the morning so the captain could get some rest. It was terrible sleeping overnight in the airport. They offered a $12 meal voucher. That was it! And the only place open in the middle of the night was Dunkin’ Donuts who didn’t even accept the voucher. They should have cancelled the flight much earlier on in the evening instead of just stringing us along hour by hour with more delays. Not professional and unacceptable. There was no refund for inconvenience. I probably will not be flying American Airlines again.

This leg they tried and did well with what they had to work from.

It was nice being on a flight that had working wifi. The boarding was quick - why don’t all airlines have small boarding groups window to aisle? Makes so much sense!!! I was disappointed to be the first person stopped to have to gate check my carryon. Especially when there was plenty of overhead space at the back! But I get it…keeps it moving. Crew was nice.

The flight was as good as it gets when flying. On time departure and arrival plus no lost luggage.

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..

My first flight was moved 6 hours causing me to miss my meeting. The second was delayed about an hour and a half. Most of the crews apparently dont like their jobs or just working for Frontier. Only one flight attendant wasn"t snappy or rude.

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.

Book cheap flights from San Juan to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Juan to St. Louis found on KAYAK in the last 72 hours.
12/12Thu
1 stopFrontier
8h 19mSJU-STL
$57
12/17Tue
1 stopFrontier
8h 50mSJU-STL
$64
2/20Thu
1 stopDelta
11h 15mSJU-STL
$132
12/12Thu
2 stopsAmerican Airlines
9h 19mSJU-STL
$135
12/11Wed
1 stop
22h 39mSJU-STL
$139
2/18Tue
1 stopDelta
10h 00mSJU-STL
$152
12/5Thu
3 stops
51h 33mSJU-STL
$166
1/22Wed
2 stopsUnited Airlines
12h 11mSJU-STL
$177
12/17Tue
2 stopsUnited Airlines
15h 29mSJU-STL
$216
1/9Thu
2 stopsAmerican Airlines
9h 06mSJU-STL
$291

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Last minute flights from San Juan 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 San Juan to St. Louis that are departing in the next 10 days.
11/25Mon
multi-stopFrontier
29h 42mSJU-STL
12/3Tue
multi-stopFrontier
18h 52mSTL-SJU
$299
11/25Mon
multi-stopFrontier
29h 42mSJU-STL
12/4Wed
multi-stopFrontier
14h 51mSTL-SJU
$361
11/26Tue
multi-stopFrontier
26h 11mSJU-STL
12/4Wed
multi-stopFrontier
14h 51mSTL-SJU
$382
11/26Tue
multi-stopFrontier
21h 39mSJU-STL
12/3Tue
multi-stopFrontier
24h 29mSTL-SJU
$403
11/26Tue
multi-stopAmerican Airlines
11h 14mSJU-STL
12/3Tue
multi-stopAmerican Airlines
7h 52mSTL-SJU
$584
11/26Tue
multi-stopAmerican Airlines
11h 15mSJU-STL
12/3Tue
multi-stopAmerican Airlines
14h 49mSTL-SJU
$619
11/25Mon
multi-stopUnited Airlines
12h 14mSJU-STL
12/4Wed
multi-stopUnited Airlines
8h 21mSTL-SJU
$729
11/25Mon
multi-stopSpirit Airlines
15h 41mSJU-STL
12/3Tue
multi-stopSpirit Airlines
25h 01mSTL-SJU
$742
11/25Mon
multi-stopUnited Airlines
14h 20mSJU-STL
12/3Tue
multi-stopUnited Airlines
14h 31mSTL-SJU
$769
11/23Sat
multi-stopDelta
8h 04mSJU-STL
11/30Sat
multi-stopDelta
7h 58mSTL-SJU
$779

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

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