SJO - STL

$129 Find Cheap Flights from San José 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 José to St. Louis departing on 5/24. 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
1 adult, Economy, 0 bags

KAYAK searches 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 in flight searches from San José 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 José to St. Louis, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$343
Typical prices: $609-$388
Frontier
Sat 8/15Sat 8/29
SJO - STL • 1 stop
Cheapest one-way
$129
Typical prices: $207-$299
Frontier
Sun 5/24
SJO - STL • 1 stop
Top airlines
Frontier
Cheapest • from $343 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San José and St. Louis. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Houston (IAH)
Cheapest • Avg $450 (round-trip)
Charlotte (CLT)
Shortest trip • 7h 36m (one-way)
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 29% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San José to St. Louis (SJO-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San José 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San José to St. Louis

Sat, Aug 15 - Sat, Aug 29
Frontier Logo
9:35 am - 11:59 pm
SJO
-
STL
13h 24m
1 stop
Frontier Logo
4:10 pm - 8:20 am
STL
-
SJO
17h 10m
1 stop
$343Frontier
Wed, Sep 23 - Sun, Sep 27
United Airlines Logo
1:25 pm - 8:37 am
SJO
-
STL
18h 12m
2 stops
United Airlines Logo
6:15 am - 7:37 pm
STL
-
SJO
14h 22m
1 stop
$385United Airlines
Fri, Jun 5 - Sat, Jun 20
Multiple Airlines Logo
7:07 am - 11:57 pm
SJO
-
STL
15h 50m
1 stop
Multiple Airlines Logo
4:17 pm - 8:20 am
STL
-
SJO
17h 03m
1 stop
$416Multiple Airlines
Fri, Oct 23 - Fri, Oct 30
United Airlines Logo
1:25 pm - 8:37 am
SJO
-
STL
18h 12m
2 stops
United Airlines Logo
4:17 pm - 10:25 am
STL
-
SJO
19h 08m
1 stop
$417United Airlines
Sat, Oct 31 - Mon, Nov 2
United Airlines Logo
11:35 am - 10:06 pm
SJO
-
STL
9h 31m
1 stop
United Airlines Logo
6:15 am - 1:15 pm
STL
-
SJO
7h 00m
1 stop
$426United Airlines
Sat, Oct 31 - Mon, Nov 2
United Airlines Logo
7:45 am - 9:37 am
SJO
-
STL
24h 52m
2 stops
United Airlines Logo
5:18 pm - 11:25 am
STL
-
SJO
18h 07m
2 stops
$430United Airlines
Mon, Aug 17 - Sat, Aug 22
American Airlines Logo
1:29 pm - 9:32 am
SJO
-
STL
19h 03m
1 stop
American Airlines Logo
6:25 pm - 12:26 pm
STL
-
SJO
19h 01m
1 stop
$435American Airlines
Mon, Aug 17 - Sat, Aug 22
American Airlines Logo
1:29 pm - 9:32 am
SJO
-
STL
19h 03m
1 stop
American Airlines Logo
6:25 pm - 11:34 am
STL
-
SJO
18h 09m
2 stops
$439American Airlines
Mon, Aug 17 - Sat, Aug 22
American Airlines Logo
1:29 pm - 9:32 am
SJO
-
STL
19h 03m
1 stop
American Airlines Logo
6:25 pm - 11:34 am
STL
-
SJO
18h 09m
2 stops
$440American Airlines
Mon, Aug 17 - Sat, Aug 22
American Airlines Logo
1:29 pm - 9:32 am
SJO
-
STL
19h 03m
1 stop
American Airlines Logo
5:11 pm - 1:52 pm
STL
-
SJO
21h 41m
1 stop
$441American Airlines
Booking Insights

KAYAK's insights & trends for San José to St. Louis flights

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

How much is a round-trip flight from San José to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San José to St. Louis departing in August.

What is the cheapest month to fly from San José 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 José 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 José to St. Louis is October, where tickets cost $336 (return) on average. On the other hand, the most expensive months are January and March, where the average cost of round-trip tickets is $720 and $531 respectively.

Find deals

Good to know

Low seasonOctober
Cheapest flight$129
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from San José to St. Louis

When to book flights from San José to St. Louis

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

FAQs for booking flights from San José to St. Louis

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

    In the last 3 days, the lowest price for a flight from San José to St. Louis was $129 for a one-way ticket and $343 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in San José and on arrival in St. Louis.

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

    On your way to St. Louis, you’ll fly out from San José Juan Santamaria Intl. You’ll be landing at Lambert-St Louis.

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

    We unfortunately don’t have that data for this specific route.

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

    Star Alliance, and oneworld are the airline alliances operating flights between San José and St. Louis, with Star Alliance being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from San José to St. Louis are United Airlines and American Airlines. With an average price for the route of $426 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $492 and an overall rating of 7.1.

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

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San José 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 José 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 José 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 José with another airline. Booking your flights between San José 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 José 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 José up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from San José to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from San José 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 José 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.
7.4
United AirlinesOverall score based on 9680 reviews
7.1Entertainment
8.1Crew
7.7Boarding
6.6Food
7.3Comfort
Airline reviews

Seats very comfortable; service efficient and pleasant; flight was on-time; boarding organized.

10.0 ExcellentEirene, May 2026
YYZ - EWR
Read more United Airlines reviews

Seats very comfortable; service efficient and pleasant; flight was on-time; boarding organized.

Seats were not super comfortable and food was not good at all. If I had a chance I would definitely fly a different airline. Of course they are better than any budget airline, but not by much.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Very friendly and helpful staff on board and United was excellent when I missed my onward flight due to the delay in London. Very well organised meant much less stress

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Flight crew was super friendly and helpful. Food was frequent and honestly pretty good. Plenty of on-board entertainment. Economy seats are super cramped for such a long flight, but the crew allowed people to get up and stretch, and kids could wander with their parents, so we all made it work. Overall a very good experience.

not sure why you ask about food, I n3ver get food on flights except maybe cookies or pretzels. wifi was slow and in and out most of the flight not good.

Everything was fine except the end of the flight. We spent more than an hour circling around Miami due to weather conditions. That was not good.

They lost my bag. ... And I asked them 3 times to 3 different people if my checked bag will maKe it all the way - they all confirmed and at the end it was left at the connection... Bravo

Cancelled BOYH legs of our flight home 30 min before initial boarding

Cancelled the flight half hour before boarding. Then cancelled the connecting flight too.

Delayed due to weather in Dallas (arriving flight arrived late), then boarded the plane only to deboard immediately afterwards, tire needed to be replaced. Flight supposed to depart at 6:15pm but departed at 9:35pm.

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

Boarding gate at LAX was too crowded—two gates next to one another

The flight was delayed about an hour for a maintenance specialist to approve the maintenance repair

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

Information on your arrival and departure airports

San José (SJO)
St. Louis (STL)