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Cheap flights from St. Louis to San José from $235

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to San José departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to San José

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:34 pm - 3:11 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
19h 37m1 stop Orlando
Multiple Airlines Logo
8:55 am - 10:40 amSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
24h 45m2 stops Tampa Atlanta Hartsfield-Jackson
$497Multiple Airlines
Mon, Oct 19 - Sat, Oct 31
Delta Logo
10:00 am - 10:15 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
12h 15m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 11:56 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
16h 56m1 stop Atlanta Hartsfield-Jackson
$510Delta
Tue, Nov 10 - Wed, Nov 18
American Airlines Logo
5:00 am - 2:49 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
9h 49m1 stop Miami
American Airlines Logo
2:01 pm - 9:47 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
7h 46m1 stop Miami
$510American Airlines
Tue, Nov 10 - Tue, Nov 17
American Airlines Logo
5:00 am - 1:46 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
8h 46m1 stop Dallas/Fort Worth
American Airlines Logo
2:07 pm - 9:57 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
7h 50m1 stop Charlotte Douglas
$510American Airlines
Mon, Nov 9 - Tue, Nov 17
Delta Logo
10:00 am - 10:15 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
12h 15m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:30 pm - 11:56 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
9h 26m1 stop Atlanta Hartsfield-Jackson
$510Delta
Tue, Nov 10 - Tue, Nov 17
Multiple Airlines Logo
10:35 am - 7:55 amSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
46h 20m2 stops Atlanta Hartsfield-Jackson Tampa
Multiple Airlines Logo
7:07 am - 7:39 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
11h 32m1 stop Orlando
$511Multiple Airlines
Mon, Oct 19 - Mon, Oct 26
Southwest Logo
5:10 am - 12:20 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
7h 10m1 stop Houston Hobby
Southwest Logo
1:20 pm - 10:25 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
9h 05m1 stop Orlando
$512Southwest
Mon, Nov 9 - Tue, Nov 17
United Airlines Logo
7:30 am - 8:39 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
13h 09m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
United Airlines Logo
8:45 am - 4:46 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
8h 01m1 stop Houston George Bush Intcntl
$530United Airlines
Sun, Nov 1 - Fri, Nov 13
United Airlines Logo
6:15 am - 1:22 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
7h 07m1 stop Houston George Bush Intcntl
United Airlines Logo
2:25 pm - 10:26 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
8h 01m1 stop Houston George Bush Intcntl
$530United Airlines
Sun, Nov 1 - Fri, Nov 13
Southwest Logo
7:55 pm - 12:50 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
16h 55m2 stops Baltimore/Washington Orlando
Southwest Logo
1:50 pm - 7:40 amSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
17h 50m2 stops Orlando Baltimore/Washington
$537Southwest
Sun, Jan 31 - Tue, Feb 9

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American Airlines flights from St. Louis to San José

Our best American Airlines deals on St. Louis to San José flight tickets
American Airlines
Nov 1
STL6:00 amLambert-St Louis
14h 50m
2 stops
SJO8:50 pmSan José Juan Santamaria Intl
Nov 13
SJO6:20 amSan José Juan Santamaria Intl
15h 23m
2 stops
STL9:43 pmLambert-St Louis
$535
American Airlines
Oct 24
STL7:10 pmLambert-St Louis
19h 50m
1 stop
SJO2:00 pmSan José Juan Santamaria Intl
Nov 3
SJO2:07 pmSan José Juan Santamaria Intl
7h 50m
1 stop
STL9:57 pmLambert-St Louis
$539
American Airlines
Oct 19
STL5:40 amLambert-St Louis
9h 20m
1 stop
SJO2:00 pmSan José Juan Santamaria Intl
Oct 26
SJO6:00 amSan José Juan Santamaria Intl
10h 27m
1 stop
STL5:27 pmLambert-St Louis
$540

Frontier flights from St. Louis to San José

Our best Frontier deals on St. Louis to San José flight tickets
Frontier
Oct 9
STL8:34 pmLambert-St Louis
11h 56m
1 stop
SJO7:30 amSan José Juan Santamaria Intl
Oct 17
SJO8:45 amSan José Juan Santamaria Intl
9h 54m
1 stop
STL7:39 pmLambert-St Louis
$478
Frontier
Oct 9
STL8:34 pmLambert-St Louis
11h 56m
1 stop
SJO7:30 amSan José Juan Santamaria Intl
Oct 17
SJO8:45 amSan José Juan Santamaria Intl
23h 55m
2 stops
STL9:40 amLambert-St Louis
$494
Frontier
Oct 9
STL10:35 amLambert-St Louis
21h 55m
2 stops
SJO7:30 amSan José Juan Santamaria Intl
Oct 17
SJO8:45 amSan José Juan Santamaria Intl
32h 01m
2 stops
STL5:46 pmLambert-St Louis
$559

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to San José that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 7, 2026.
Use the filters below to find and compare flights from St. Louis to San José that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Mon 10/19

8:34 pm-3:11 pm

1 stop19h 37m

San José Juan Santamaria Intl

Sat 10/31

8:55 am-10:40 am

2 stops24h 45m

$497

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Tue 11/10

10:00 am-10:15 pm

1 stop12h 15m

San José Juan Santamaria Intl

Wed 11/18

7:00 am-11:56 pm

1 stop16h 56m

$510

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Tue 11/10

5:00 am-2:49 pm

1 stop9h 49m

San José Juan Santamaria Intl

Tue 11/17

2:01 pm-9:47 pm

1 stop7h 46m

$510

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Mon 11/9

5:00 am-1:46 pm

1 stop8h 46m

San José Juan Santamaria Intl

Tue 11/17

2:07 pm-9:57 pm

1 stop7h 50m

$510

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Tue 11/10

10:00 am-10:15 pm

1 stop12h 15m

San José Juan Santamaria Intl

Tue 11/17

2:30 pm-11:56 pm

1 stop9h 26m

$510

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Mon 10/19

10:35 am-7:55 am

2 stops46h 20m

San José Juan Santamaria Intl

Mon 10/26

7:07 am-7:39 pm

1 stop11h 32m

$511

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Mon 11/9

5:10 am-12:20 pm

1 stop7h 10m

San José Juan Santamaria Intl

Tue 11/17

1:20 pm-10:25 pm

1 stop9h 05m

$512

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Sun 11/1

7:30 am-8:39 pm

2 stops13h 09m

San José Juan Santamaria Intl

Fri 11/13

8:45 am-4:46 pm

1 stop8h 01m

$530
Quickest round-trip

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Sun 11/1

6:15 am-1:22 pm

1 stop7h 07m

San José Juan Santamaria Intl

Fri 11/13

2:25 pm-10:26 pm

1 stop8h 01m

$530

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Sun 1/31

7:55 pm-12:50 pm

2 stops16h 55m

San José Juan Santamaria Intl

Tue 2/9

1:50 pm-7:40 am

2 stops17h 50m

$537

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San José from

How to get the cheapest flight ticket from St. Louis to San José

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and San José?

Prices are currently low for flights on this route.

Typical prices usually range from $511 to $636.
The lowest price recently found on this route was $478.

What is the cheapest month to fly to San José?

In general, October is the cheapest month to fly from St. Louis to San José. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $441. If you don’t want to visit San José in October, then you should wait until January to fly from St. Louis, when ticket prices are also cheap, with an average price of $457.

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

You are more likely to see cheaper flights to San José from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to San José for around $602 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San José from St. Louis for as low as $468 on momondo.

How have St. Louis to San José flight prices changed over time?

When to book flights from St. Louis to San José

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to San José according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to San José (STL to SJO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to San José

Fastest flight time

6h 25m

Direct flights

None
The fastest flight from St. Louis to San José takes 6h 25m
There are no direct flights from St. Louis to San José. There are no popular flight routes from St. Louis to San José.
Search flight deals

Frequently asked questions about flying from St. Louis to San José

  • How far is Lambert-St Louis to San José Juan Santamaria Intl by plane?

    Lambert-St Louis and San José Juan Santamaria Intl are 2016.9 mi apart from one another. In terms of flight time, this usually takes a little over 6h 25m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to San José Juan Santamaria Intl Airport?

    Prices for flights from Lambert-St Louis Airport to San José Juan Santamaria Intl Airport are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to San José Juan Santamaria Intl Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to San José Juan Santamaria Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to San José Juan Santamaria Intl Airport.

  • What documentation or ID do you need to fly to San José Juan Santamaria Intl Airport?

    The travel and health documents you'll need for your trip to San José Juan Santamaria Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San José Juan Santamaria Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to San José?

Best airlines flying from St. Louis to San José

Compare and see reviews for airlines that fly from St. Louis to San José with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $359Free CancellationRating
7.8
8,503 reviews
Search Delta flights
American AirlinesPriceFrom $359Free CancellationRating
7.1
11,877 reviews
Search American Airlines flights
United AirlinesPriceFrom $386Free CancellationRating
7.4
10,082 reviews
Search United Airlines flights
SouthwestPriceFrom $388Free CancellationRating
8.0
4,217 reviews
Search Southwest flights
GOLPriceFrom $628Free CancellationRating
7.3
1,272 reviews
Search GOL flights

Traveling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Manuel Antonio
Jacó
Monteverde
Alajuela
Heredia
Santa Elena
San Gerardo de Dota
Dominical
Esterillos Este

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to San José?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to San José. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to San José with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San José from St. Louis with this policy.

How can momondo help me find flights from St. Louis to San José?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to San José.

I’m not ready to book a flight from St. Louis to San José right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San José, momondo offers a useful price alert feature which will track prices for flights to San José from St. Louis and alert you when they change.

An easier way to manage your San José trip

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