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Cheap flights from San José to St. Louis from $278

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San José to St. Louis departing on 7/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San José to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:55 am - 12:03 pm
SJO
-
STL
27h 08m
2 stops
United Airlines Logo
12:59 pm - 12:21 pm
STL
-
SJO
24h 22m
2 stops
$511United Airlines
Fri, Sep 4 - Sun, Sep 6
United Airlines Logo
12:30 am - 10:45 pm
SJO
-
STL
21h 15m
1 stop
United Airlines Logo
6:00 am - 10:39 pm
STL
-
SJO
17h 39m
2 stops
$518United Airlines
Tue, Jun 2 - Sat, Jun 6
United Airlines Logo
7:55 am - 12:03 pm
SJO
-
STL
27h 08m
2 stops
United Airlines Logo
5:30 pm - 12:21 pm
STL
-
SJO
19h 51m
2 stops
$521United Airlines
Fri, Sep 4 - Sun, Sep 6
American Airlines Logo
2:52 pm - 9:32 am
SJO
-
STL
17h 40m
2 stops
American Airlines Logo
6:42 am - 7:52 pm
STL
-
SJO
14h 10m
2 stops
$538American Airlines
Tue, Aug 11 - Tue, Aug 25
Delta Logo
2:23 pm - 11:39 pm
SJO
-
STL
9h 16m
1 stop
Delta Logo
11:51 am - 10:15 pm
STL
-
SJO
10h 24m
1 stop
$539Delta
Sun, Nov 1 - Sat, Nov 28
United Airlines Logo
12:30 am - 2:16 pm
SJO
-
STL
12h 46m
1 stop
United Airlines Logo
6:24 pm - 10:11 am
STL
-
SJO
16h 47m
1 stop
$546United Airlines
Wed, May 27 - Mon, Jun 1
United Airlines Logo
12:30 am - 10:52 pm
SJO
-
STL
21h 22m
2 stops
United Airlines Logo
5:29 pm - 10:11 am
STL
-
SJO
17h 42m
2 stops
$551United Airlines
Wed, May 27 - Mon, Jun 1
American Airlines Logo
7:00 am - 10:24 pm
SJO
-
STL
14h 24m
2 stops
American Airlines Logo
4:47 pm - 11:05 am
STL
-
SJO
19h 18m
2 stops
$553American Airlines
Sat, Sep 12 - Sun, Sep 20
American Airlines Logo
2:00 pm - 11:58 pm
SJO
-
STL
8h 58m
1 stop
American Airlines Logo
6:12 pm - 1:00 pm
STL
-
SJO
19h 48m
1 stop
$555American Airlines
Wed, Jul 15 - Mon, Jul 20
American Airlines Logo
7:00 am - 10:57 pm
SJO
-
STL
14h 57m
1 stop
American Airlines Logo
7:04 am - 10:43 pm
STL
-
SJO
16h 39m
1 stop
$557American Airlines
Wed, Jun 10 - Fri, Jun 12

American Airlines flights from San José to St. Louis

Our best American Airlines deals on San José to St. Louis flight tickets
American Airlines
Aug 11
SJO2:52 pmSan José Juan Santamaria Intl
17h 40m
2 stops
STL9:32 amLambert-St Louis
Aug 25
STL6:42 amLambert-St Louis
14h 10m
2 stops
SJO7:52 pmSan José Juan Santamaria Intl
$538
American Airlines
Sep 12
SJO7:00 amSan José Juan Santamaria Intl
14h 24m
2 stops
STL10:24 pmLambert-St Louis
Sep 20
STL4:47 pmLambert-St Louis
19h 18m
2 stops
SJO11:05 amSan José Juan Santamaria Intl
$553
American Airlines
Jul 15
SJO2:00 pmSan José Juan Santamaria Intl
8h 58m
1 stop
STL11:58 pmLambert-St Louis
Jul 20
STL6:12 pmLambert-St Louis
19h 48m
1 stop
SJO1:00 pmSan José Juan Santamaria Intl
$555

United Airlines flights from San José to St. Louis

Our best United Airlines deals on San José to St. Louis flight tickets
United Airlines
Sep 4
SJO7:55 amSan José Juan Santamaria Intl
27h 08m
2 stops
STL12:03 pmLambert-St Louis
Sep 6
STL12:59 pmLambert-St Louis
24h 22m
2 stops
SJO12:21 pmSan José Juan Santamaria Intl
$511
United Airlines
Jun 2
SJO12:30 amSan José Juan Santamaria Intl
21h 15m
1 stop
STL10:45 pmLambert-St Louis
Jun 6
STL6:00 amLambert-St Louis
17h 39m
2 stops
SJO10:39 pmSan José Juan Santamaria Intl
$518
United Airlines
Sep 4
SJO7:55 amSan José Juan Santamaria Intl
27h 08m
2 stops
STL12:03 pmLambert-St Louis
Sep 6
STL5:30 pmLambert-St Louis
19h 51m
2 stops
SJO12:21 pmSan José Juan Santamaria Intl
$521

momondo Fare Finder

 
Customize your flight search to find flights from San José to St. Louis 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 May 16, 2026.
Use the filters below to find and compare flights from San José to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 9/4

7:55 am-12:03 pm

2 stops27h 08m

Lambert-St Louis

Sun 9/6

12:59 pm-12:21 pm

2 stops24h 22m

$511

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 6/2

12:30 am-10:45 pm

1 stop21h 15m

Lambert-St Louis

Sat 6/6

6:00 am-10:39 pm

2 stops17h 39m

$518

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 9/4

7:55 am-12:03 pm

2 stops27h 08m

Lambert-St Louis

Sun 9/6

5:30 pm-12:21 pm

2 stops19h 51m

$521

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 8/11

2:52 pm-9:32 am

2 stops17h 40m

Lambert-St Louis

Tue 8/25

6:42 am-7:52 pm

2 stops14h 10m

$538
Quickest round-trip

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sun 11/1

2:23 pm-11:39 pm

1 stop9h 16m

Lambert-St Louis

Sat 11/28

11:51 am-10:15 pm

1 stop10h 24m

$539

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 5/27

12:30 am-2:16 pm

1 stop12h 46m

Lambert-St Louis

Mon 6/1

6:24 pm-10:11 am

1 stop16h 47m

$546

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 5/27

12:30 am-10:52 pm

2 stops21h 22m

Lambert-St Louis

Mon 6/1

5:29 pm-10:11 am

2 stops17h 42m

$551

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 9/12

7:00 am-10:24 pm

2 stops14h 24m

Lambert-St Louis

Sun 9/20

4:47 pm-11:05 am

2 stops19h 18m

$553

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 7/15

2:00 pm-11:58 pm

1 stop8h 58m

Lambert-St Louis

Mon 7/20

6:12 pm-1:00 pm

1 stop19h 48m

$555

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 6/10

7:00 am-10:57 pm

1 stop14h 57m

Lambert-St Louis

Fri 6/12

7:04 am-10:43 pm

1 stop16h 39m

$557

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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 San José and St. Louis?

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

In general, October is the cheapest month to fly from San José to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $336. The month of September is another great option to travel to St. Louis, with average flight prices from San José averaging around $367.

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

As of May 2026, prices for San José to St. Louis flights are approximately 14% cheaper when compared to flights at the same time last year.

When to book flights from San José to St. Louis

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

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

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

Fastest flight time

8h 02m

Direct flights

None
The fastest flight from San José to St. Louis takes 8h 02m
There are no direct flights from San José to St. Louis. There are no popular flight routes from San José to St. Louis.
Search flight deals

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

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

    The straight-line distance from San José Juan Santamaria Intl to Lambert-St Louis is 2016.9 mi. Typically, this will take 8h 02m by plane in normal conditions.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San José Juan Santamaria Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from San José to St. Louis

Compare and see reviews for airlines that fly from San José to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $274Free CancellationRating
7.1
11,662 reviews
Search American Airlines flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
9,726 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San José to St. Louis for you.

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

Yes. momondo allows you to filter the results for San José to St. Louis flights to just show those with flexible booking policies.

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

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 San José to St. Louis.

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

Price alerts on flights to St. Louis from San José are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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