SJU - STL

$65 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 3/1. 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 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
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Cheap Flight Deals from San Juan to St. Louis (SJU-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Juan to St. Louis that are departing in the next months. 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
9:00 am - 11:44 pmSJU-STL
16h 44m1 stop
5:20 pm - 9:49 amSTL-SJU
14h 29m1 stop
$136Frontier
Find Deal
Thu, Feb 13 - Tue, Feb 18
2:37 pm - 12:04 amSJU-STL
10h 27m1 stop
5:41 pm - 2:49 amSTL-SJU
8h 08m1 stop
$150Frontier
Find Deal
Thu, Apr 24 - Tue, Apr 29
6:15 am - 11:56 amSJU-STL
6h 41m1 stop
1:00 pm - 10:11 pmSTL-SJU
8h 11m1 stop
$265Delta
Find Deal
Sat, Apr 5 - Sat, Apr 26
6:21 am - 10:21 pmSJU-STL
17h 00m1 stop
6:15 am - 5:14 pmSTL-SJU
9h 59m2 stops
$330American Airlines
Find Deal
Thu, Apr 24 - Sun, Apr 27
7:15 am - 3:37 pmSJU-STL
9h 22m1 stop
7:20 am - 4:29 pmSTL-SJU
8h 09m1 stop
$369Delta
Find Deal
Thu, Apr 10 - Sat, Apr 19
4:44 pm - 11:56 pmSJU-STL
9h 12m2 stops
6:00 am - 11:54 pmSTL-SJU
15h 54m1 stop
$375American Airlines
Find Deal
Tue, Feb 18 - Sat, Feb 22
1:05 am - 12:20 pmSJU-STL
12h 15m2 stops
11:00 am - 8:38 pmSTL-SJU
8h 38m1 stop
$435United Airlines
Find Deal
Fri, Apr 4 - Sat, Apr 26
1:05 am - 3:31 pmSJU-STL
15h 26m2 stops
3:40 pm - 11:54 pmSTL-SJU
7h 14m1 stop
$471United Airlines
Find Deal
Thu, Mar 20 - Mon, Mar 31
2:20 pm - 10:45 pmSJU-STL
9h 25m1 stop
1:25 pm - 6:50 pmSTL-SJU
4h 25mnonstop
$486Southwest
Find Deal
Thu, May 15 - Sat, May 17
3:25 pm - 9:55 pmSJU-STL
7h 30m1 stop
1:25 pm - 6:50 pmSTL-SJU
4h 25mnonstop
$501Southwest
Find Deal
Thu, Apr 10 - Sat, Apr 19

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 round-trip flights from San Juan Luis Munoz Marin Intl Airport 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 Saturday. On your return trip to San Juan, you should consider flying back on a Wednesday, and avoid Saturdays for better deals.

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 round-trip 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 April, where tickets cost $326 (return) on average. On the other hand, the most expensive months are June and August, where the average cost of round-trip tickets is $534 and $474 respectively.

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

The average round-trip 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.
Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $289 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.
To get a below average price on the flight from San Juan Luis Munoz Marin Intl Airport to St. Louis, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low season

January

High season

February

Cheapest flight

$65
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 6% 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 $65 for a one-way ticket and $136 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, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from San Juan to St. Louis are Southwest and Delta. With an average price for the route of $554 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 $378 and an overall rating of 8.0.

  • 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

KAYAK’s top tips for finding a cheap flight from San Juan Luis Munoz Marin Intl Airport to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $268 or less one-way.

Prefer to fly direct 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.

Direct departures

San Juan Luis Munoz Marin Intl to Lambert-St Louis

Saturday

Southwest

Southwest

See more direct flights

Direct returns

Lambert-St Louis to San Juan Luis Munoz Marin Intl

Saturday

Southwest

Southwest

See more direct flights
See more direct flights

Top 5 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.
8.1
SouthwestOverall score based on 4587 reviews
7.7Entertainment
7.1Food
8.1Comfort
8.7Crew
8.2Boarding
Airline reviews

Gate agents were informative and friendly… flight attendants were as well. Had a fun time chatting about their legacy AirTran experiences as a former fan of the airline that Southwest acquired.

10.0 ExcellentAnonymous, Jan 2025ATL - LGA
Read more Southwest reviews

Gate agents were informative and friendly… flight attendants were as well. Had a fun time chatting about their legacy AirTran experiences as a former fan of the airline that Southwest acquired.

Flight was awfully bumpy and landing was a bit jolting. I was in the restroom when snacks and drinks were served and was not asked if i wanted any. I had to ask for water finally.

Wi Fi was horrible kept cutting out the whole time and too expensive

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

Boarding was a little late, but made up for it. It was quick to taxi to the runway, since it's a smallish airport.

Excellent! Only question is how we check in at exactly 24 hours in advance and end up at the end of the B boarding group

Multiple delays and gate changes. Arrived at final destination 6 hours late. All rental cars had been taken.

Employees were kind and funny, as always! Flight was late but no announcements were made for people with tight connections to help them transition quickly. No service due to turbulence.

It was 2 hours 45 minutes late, for no apparently clear reason.

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

The crew was very kind and always smiling. The seats were great and I was very comfortable during the flight. The only thing I didn't like was that the lavatories got really dirty at some point during the flight. Other than that my experience was great

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

Flight left early and arrived early. the whole trip was excellent.

It was terrible, I sat next to a person with a cat, I'm allergic to animal dander, my discomfort was extreme

Seats were really tight and the seat belts did not give enough slack.

Great list of movies, seat was generally comfortable, but not much shoulder room. The fresh baked cookie mostly made up for the lack of variety with the meals, which were all tomato based.

I like in St George and prefer to fly out of CDC than SGU. Hopefully, they will continue the flights out of Cedar

Broken jer bridge. Poor communication about it. Lost 2 of 4 luggage pieces

Overall, it was okay. Seat was a little cramped. Would’ve liked more substantial snacks or opportunity to buy some.

Newer plane, relatively easy boarding, not a full flight and was told that we could not be moved up because of weight and balance issues. Otherwise, a very good experience.

Food choices were very limited. Taste of the dishes was average.

Great. Food going from Australia to the US was better than other way around, but still needs improvement in terms of quality and quantity!!!

Maybe add a seat trade app for flyers that didn’t get seats together

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence.

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

I liked all the informational texts. I always knew where to go and when .

Random carry-on baggage inspection before boarding for NO REASON. The crew kept talking loudly the entire time, making it impossible to rest. When I asked the crew for something, they said they would come back later but never did. It was an EXTREMELY UNPLEASANT and UNCOMFORTABLE flight.

This was a pleasant, short flight and the crew was friendly.

Very poor. Our special services attendant gave us incorrect information. I also was mishandled at landing. There was no wheelchair waiting. I fell deboarding the plane. Appalling!

It was good. It’s been a long time since my wife and I fly any where and things have changed. Our trip was to see our new grandson. We fly economy and that was not good for my bad back. It was a quick flight but uncomfortable.

I paid for what I got which was cheap, I brought my own entertainment. I knew what to expect, so I could be prepared. If you’re flying economy, check in early like me. I have no problems with my flight, was on time, staff were friendly, and overall good experience.

Boarded over an hour late, no communication, the sign just changed, no attendant to answer questions - she disappeared forever (hiding). Small plane and couldn’t hear the overhead nor understand.

Service in first class no longer exists on American Airlines .

Customer service in first class does not exist on American Airlines

I never have a good experience with American and this was no different. The airplane was INCREDIBLY hot. Like unbearably so. Everyone was fanning themselves with pamphlets and sweating. When someone asked the flight attendant to turn down the temperature they were told there was nothing the crew could do. Once we pushed back from the gate we then had to wait an hour to take off and the communication from the crew was not good. People were getting up this whole time and a man was even in the bathroom when we took off. Once we landed at our destination we waited another 30 minutes at the gate to deplane with, again, no communication from the crew as to what was going on.

Flight was delayed due to a steering issue with plane. The delay caused me to miss the connecting flight. The delay caused me to spend an extra 21 hours in airports and flights to get to my destination. The plane issue obviously should have been found and fixed before we even boarded. Ridiculous.

Very easy with the app to board and staff skills

After waiting several minutes to be acknowledged by 3 employees on their phones, was told we had missed our flight because the doors were closed at that literal moment. Had they given any actual service or help while we were standing there we would have been on with time to spare. More than 10 people were turned away in this fashion claiming there was no way they could let us on the plane, even though it was still sitting connected to the terminal. After the desk agents let us know they didn't care about the situation we were forced to pay more than twice the price of our original tickets as no credits were given for the price of the "missed" flight. And the icing on the cake was after being treated poorly, fleeced for another few hundred dollars for new tickets? We waited on the next plane for 25 minutes passed the "doors closed" time, letting almost an extra dozen passengers on board. You're company has lazy, disinterested employees and your lack of any real help will ensure this was the first and last time we fly Frontier. Awful.

Flight was changed (according to Frontier, by Kayak) without my notification. And all flights were delayed by at least an hour and a half. Uncomfortable plane. Bad service. Will never fly Frontier again.

My experience with the phoenix airport was terrible, the personnel lay the ticket counter charged me for a carry on that fit in the carry on size box, and the two women I spoke with were terribly rude and not willing to help.,,, there was one lady “candy” on the flight crew that was amazing and is the only reason I stayed on the flight at all, because the other stewards helping people to get seated on the plane were terrible

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The plane was clean, the crew was friendly and helpful. It’s a low cost airline so there was no food, drinks or in flight entertainment but we didn’t expect any of these things. In the room for improvement department, they should install USB ports in seats to charge mobile devices.

The seats were extremely hard and uncomfortable, even for a budget airline.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Charging $74 for one checked bag is outrageous. I will never fly Frontier again.

Boarding was very well executed. Got my bag right away.

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

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