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$118 Find cheap flights from Puerto Rico 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 to St. Louis departing on 5/31. 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 6/1
Sat 6/8

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results for flights 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 for flights to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 43,740,974 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Flights to St. Louis - Travel Insights & Trends

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

What is the cheapest day to fly to St. Louis?

The average price of all flights to St. Louis clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to St. Louis is Thursday where tickets can be as cheap as $371. On the other hand, the most expensive day to fly is Saturday, where prices are $471 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights 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 to St. Louis is April, where tickets cost $270 on average for one-way flights. On the other hand, the most expensive months are June and August, where the average cost of tickets from Puerto Rico is $511 and $453 respectively. For return trips, the best month to travel is April with an average price of $270.

What is the cheapest time of day to fly to St. Louis?

The average price for all flights to St. Louis depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to St. Louis is generally at night, when flights cost $304 on average. The most expensive time of day to fly to St. Louis is generally in the evening, which is peak travel time and where the average cost of a ticket is $488.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights 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, you should book around 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 36 days before departure.

Which airline offers the most flights to St. Louis?

Of the 9 airlines that fly to St. Louis, Southwest offers the most flights, with around 803 per week, followed by American Airlines with 235 flights per week.

How long is the flight to St. Louis?

The duration of your flight to St. Louis depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular route to St. Louis on KAYAK is from San Juan, which takes 7h 05m.

How many direct flights to St. Louis are there each day?

There are around 218 direct flights from within Puerto Rico to St. Louis every day. Most flights depart in the morning, with 7:00 am the most common departure time and 48% of flights departing in the morning.

How many direct flights to St. Louis are there each week?

Each week there are around 1,524 direct flights from within Puerto Rico to St. Louis. The most common day for departures is Sunday, with 16% of flights taking off on this day.

How many long-haul flights are there to St. Louis each week?

There are not any long-haul (6-12 hour flight duration) or short-haul (up to 3 hour flight duration) flights to St. Louis. Instead, there are 1 medium-haul flights (3-6 hour flight duration), with the most arriving from San Juan Luis Munoz Marin Intl Airport.

How many cities have direct flights to St. Louis?

From Puerto Rico, there are direct flights to St. Louis from 1 city. This city is San Juan Luis Munoz Marin Intl Airport and there are 1 direct flights each week.

Good to know

Low season

January

High season

July

Cheapest flight

$118
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from San Juan to St. Louis

FAQs - booking St. Louis flights

  • How far is St. Louis from central St. Louis?

    St. Louis is 13 miles from the center of St. Louis.

  • What is the name of St. Louis’s airport?

    St. Louis is served by St. Louis, also commonly referred to as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl. The airport code is STL.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to 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 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Prefer to fly non-stop to Lambert-St Louis?

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

Nonstop departures

Puerto Rico to Lambert-St Louis

Monday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Tuesday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Wednesday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Thursday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Friday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Saturday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Sunday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

See more direct flights

Nonstop returns

Lambert-St Louis to Puerto Rico

Monday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Tuesday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Wednesday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Thursday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Friday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Saturday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Sunday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

See more direct flights
See more direct flights

Top 5 airlines serving from Puerto Rico to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Puerto Rico to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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 10874 reviews
8.0Entertainment
7.9Comfort
8.6Crew
7.4Food
8.2Boarding
Airline reviews

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

8.0 ExcellentAnonymous, May 2024ATL - ATW
Read more about Delta reviews

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the room where it was being kept.

The flight was delayed due to weather issue…WiFi did not work and even though I wanted to pay for WiFi I couldn’t buy it. Overall very disappointing even though I paid and reserved Business class

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

It was good! Appreciated that it was very on schedule so it made the connecting flight less stressful

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

They ocer booked the connecting flight. My bags took a long time to come out, nevertheless I got to the gate in time to board, but they have given my seat to another passenger. They were aware I was connecting from another flight that was a little late, but they did not care. The customer representatives were rude. A horrible experience.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

WiFi connected but only let you go to the AA website, not even text messaging worked.

Too bad that first class seats do not recline significantly causing discomfort

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

this is starting to seem like an american airlines standard. delayed flights and fake apologies… getting tired of it

Both flights yesterday, experienced hard landings. Harder than I’ve ever felt before. Im hopeful there was weather involved and not pilot error. Other than the landing, the flight was quite good~

I paid for WiFi, but it (WiFi) was very very slow, will never take again! Impossible open Utube 😤😤😤

I had no legroom, although I paid for extra legroom. I could barely put my bag in front of my feet and under the seat. The Wi-Fi was horrible. In fact the flight attendant said that they had to reboot it and see if it was going to work and never did.

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

Overall it was a miserable experience... I will never fly spirit for more than a 3 hour flight or overnight.

The boarding attendant was slightly rude when I asked about checking our stroller. Made me feel like I was bothering her.

My wife and I are both handicapped and at boarding they upgraded us to a seat closer to the front rather than all the way towards the back. Much appreciated.

Not much seat room, but that was unexpected. But the seat headrest was very uncomfortable.

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries.

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries. They dont really bother you about carry-on size, I brought a descent sized backpack and they didnt even check.

Spirit canceled the flight in March and never notified me!

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

Flight was canceled with little warning. Flight was rebooked through Ontario, California and connecting flight was delayed by over three hours. Frontier is living up to their Greyhound of the skies reputation for sure.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Book cheap flights from Puerto Rico to St. Louis

Recent round-trip flight deals

 
These are the cheapest round-trip flights to St. Louis found on KAYAK in the last 72 hours.
5/29Wed
1 stopSpirit Airlines
16h 25mSJU-STL
6/6Thu
1 stopSpirit Airlines
22h 59mSTL-SJU
$254
5/15Wed
1 stopSpirit Airlines
21h 22mSJU-STL
5/23Thu
1 stopSpirit Airlines
14h 10mSTL-SJU
$259
6/12Wed
1 stop
28h 34mSJU-STL
6/16Sun
1 stop
22h 49mSTL-SJU
$273
5/14Tue
1 stopFrontier
14h 47mSJU-STL
5/22Wed
1 stopFrontier
8h 04mSTL-SJU
$274
5/15Wed
1 stop
21h 22mSJU-STL
5/22Wed
1 stop
8h 04mSTL-SJU
$275
6/11Tue
1 stopFrontier
18h 22mSJU-STL
6/13Thu
1 stopFrontier
22h 29mSTL-SJU
$290
9/6Fri
1 stopAmerican Airlines
11h 57mSJU-STL
9/9Mon
2 stopsAmerican Airlines
13h 34mSTL-SJU
$353
5/15Wed
1 stopAmerican Airlines
10h 47mSJU-STL
5/22Wed
2 stopsAmerican Airlines
10h 10mSTL-SJU
$396
9/5Thu
2 stopsUnited Airlines
10h 02mSJU-STL
9/10Tue
1 stopUnited Airlines
8h 04mSTL-SJU
$594
9/5Thu
2 stopsUnited Airlines
10h 02mSJU-STL
9/10Tue
2 stopsUnited Airlines
11h 47mSTL-SJU
$714

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to St. Louis found on KAYAK in the last 72 hours.
5/31Fri
1 stopSpirit Airlines
20h 25mSJU-STL
$118
5/24Fri
1 stopSpirit Airlines
20h 25mSJU-STL
$120
8/21Wed
1 stopFrontier
28h 54mSJU-STL
$122
5/30Thu
1 stopFrontier
12h 21mSJU-STL
$149
5/30Thu
3 stops
13h 50mSJU-STL
$206
5/30Thu
3 stops
13h 50mSJU-STL
$208
8/22Thu
2 stopsAmerican Airlines
21h 27mSJU-STL
$216
8/8Thu
2 stopsAmerican Airlines
19h 42mSJU-STL
$256
5/25Sat
2 stopsUnited Airlines
15h 36mSJU-STL
$327
8/21Wed
2 stopsUnited Airlines
10h 02mSJU-STL
$387

Search by stops

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Last minute flights 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 to St. Louis that are departing in the next 10 days.
5/3Fri
multi-stopSpirit Airlines
9h 00mSJU-STL
5/7Tue
multi-stopSpirit Airlines
6h 33mSTL-SJU
$331
5/3Fri
multi-stopUnited Airlines
14h 18mSJU-STL
5/7Tue
multi-stopUnited Airlines
10h 37mSTL-SJU
$701
5/4Sat
multi-stopUnited Airlines
7h 53mSJU-STL
5/7Tue
multi-stopUnited Airlines
11h 47mSTL-SJU
$714
5/4Sat
multi-stopAmerican Airlines
9h 22mSJU-STL
5/7Tue
multi-stopAmerican Airlines
9h 24mSTL-SJU
$751

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Flights to St. Louis

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Puerto Rico

Cabin classes: