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Cheap flights from San José to St. Louis from $204

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 6/28. 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

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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.
Frontier Logo
9:35 am - 12:21 am
SJO
-
STL
13h 46m
1 stop
Frontier Logo
4:19 pm - 8:19 am
STL
-
SJO
17h 00m
1 stop
$349Frontier
Sat, May 30 - Wed, Jun 3
Frontier Logo
9:35 am - 12:14 am
SJO
-
STL
13h 39m
1 stop
Frontier Logo
4:10 pm - 8:20 am
STL
-
SJO
17h 10m
1 stop
$391Frontier
Mon, Jun 22 - Fri, Jun 26
United Airlines Logo
7:55 am - 8:39 am
SJO
-
STL
23h 44m
2 stops
United Airlines Logo
1:13 pm - 10:11 am
STL
-
SJO
21h 58m
2 stops
$413United Airlines
Thu, May 14 - Wed, Jun 3
United Airlines Logo
7:55 am - 10:30 pm
SJO
-
STL
13h 35m
1 stop
United Airlines Logo
9:23 am - 10:11 am
STL
-
SJO
25h 48m
2 stops
$426United Airlines
Wed, May 13 - Tue, Jun 2
Frontier Logo
9:35 am - 12:14 am
SJO
-
STL
13h 39m
1 stop
Frontier Logo
3:33 pm - 8:20 am
STL
-
SJO
17h 47m
2 stops
$438Frontier
Mon, Jun 22 - Fri, Jun 26
United Airlines Logo
7:55 am - 10:30 pm
SJO
-
STL
13h 35m
1 stop
United Airlines Logo
8:35 am - 10:11 am
STL
-
SJO
26h 36m
1 stop
$439United Airlines
Wed, May 13 - Tue, Jun 2
United Airlines Logo
12:30 am - 9:16 pm
SJO
-
STL
19h 46m
2 stops
United Airlines Logo
8:35 am - 7:37 pm
STL
-
SJO
12h 02m
1 stop
$442United Airlines
Fri, May 29 - Wed, Jun 3
American Airlines Logo
1:59 pm - 8:33 am
SJO
-
STL
17h 34m
1 stop
American Airlines Logo
5:15 am - 7:24 pm
STL
-
SJO
15h 09m
1 stop
$449American Airlines
Mon, Jun 22 - Fri, Jun 26
United Airlines Logo
1:00 pm - 10:45 pm
SJO
-
STL
8h 45m
1 stop
United Airlines Logo
8:35 am - 7:37 pm
STL
-
SJO
12h 02m
1 stop
$451United Airlines
Sat, May 16 - Wed, Jun 3
Multiple Airlines Logo
7:00 am - 2:48 pm
SJO
-
STL
30h 48m
2 stops
Multiple Airlines Logo
5:27 pm - 8:19 am
STL
-
SJO
39h 52m
2 stops
$455Multiple Airlines
Wed, May 13 - Wed, May 27

Delta flights from San José to St. Louis

Our best Delta deals on San José to St. Louis flight tickets
Delta
May 12
SJO1:20 pmSan José Juan Santamaria Intl
9h 39m
1 stop
STL11:59 pmLambert-St Louis
Jun 2
STL6:00 amLambert-St Louis
6h 52m
1 stop
SJO11:52 amSan José Juan Santamaria Intl
$468
Delta
May 13
SJO1:20 pmSan José Juan Santamaria Intl
9h 39m
1 stop
STL11:59 pmLambert-St Louis
May 27
STL6:00 amLambert-St Louis
6h 52m
1 stop
SJO11:52 amSan José Juan Santamaria Intl
$476
Delta
May 13
SJO1:20 pmSan José Juan Santamaria Intl
9h 39m
1 stop
STL11:59 pmLambert-St Louis
May 28
STL6:00 amLambert-St Louis
6h 52m
1 stop
SJO11:52 amSan José Juan Santamaria Intl
$489

American Airlines flights from San José to St. Louis

Our best American Airlines deals on San José to St. Louis flight tickets
American Airlines
Jun 22
SJO1:59 pmSan José Juan Santamaria Intl
17h 34m
1 stop
STL8:33 amLambert-St Louis
Jun 26
STL5:15 amLambert-St Louis
15h 09m
1 stop
SJO7:24 pmSan José Juan Santamaria Intl
$449
American Airlines
May 1
SJO11:35 pmSan José Juan Santamaria Intl
18h 55m
1 stop
STL7:30 pmLambert-St Louis
May 12
STL3:24 pmLambert-St Louis
21h 01m
1 stop
SJO11:25 amSan José Juan Santamaria Intl
$478
American Airlines
May 1
SJO2:08 pmSan José Juan Santamaria Intl
17h 46m
1 stop
STL8:54 amLambert-St Louis
May 12
STL5:53 pmLambert-St Louis
18h 32m
1 stop
SJO11:25 amSan José Juan Santamaria Intl
$479

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 April 1, 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

Sat 5/30

9:35 am-12:21 am

1 stop13h 46m

Lambert-St Louis

Wed 6/3

4:19 pm-8:19 am

1 stop17h 00m

$349

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Mon 6/22

9:35 am-12:14 am

1 stop13h 39m

Lambert-St Louis

Fri 6/26

4:10 pm-8:20 am

1 stop17h 10m

$391

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 5/14

7:55 am-8:39 am

2 stops23h 44m

Lambert-St Louis

Wed 6/3

1:13 pm-10:11 am

2 stops21h 58m

$413

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 5/13

7:55 am-10:30 pm

1 stop13h 35m

Lambert-St Louis

Tue 6/2

9:23 am-10:11 am

2 stops25h 48m

$426

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Mon 6/22

9:35 am-12:14 am

1 stop13h 39m

Lambert-St Louis

Fri 6/26

3:33 pm-8:20 am

2 stops17h 47m

$438

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 5/13

7:55 am-10:30 pm

1 stop13h 35m

Lambert-St Louis

Tue 6/2

8:35 am-10:11 am

1 stop26h 36m

$439

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/29

12:30 am-9:16 pm

2 stops19h 46m

Lambert-St Louis

Wed 6/3

8:35 am-7:37 pm

1 stop12h 02m

$442

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Mon 6/22

1:59 pm-8:33 am

1 stop17h 34m

Lambert-St Louis

Fri 6/26

5:15 am-7:24 pm

1 stop15h 09m

$449
Quickest round-trip

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 5/16

1:00 pm-10:45 pm

1 stop8h 45m

Lambert-St Louis

Wed 6/3

8:35 am-7:37 pm

1 stop12h 02m

$451

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 5/13

7:00 am-2:48 pm

2 stops30h 48m

Lambert-St Louis

Wed 5/27

5:27 pm-8:19 am

2 stops39h 52m

$455

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 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 $362.

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

As of April 2026, prices for San José to St. Louis flights are approximately 23% more expensive 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

9h 51m

Direct flights

None
The fastest flight from San José to St. Louis takes 9h 51m
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 9h 51m 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
11,544 reviews
Search American Airlines flights
United AirlinesPriceFrom $306Free CancellationRating
7.4
9,529 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
Clayton
Festus
Eureka
Edwardsville
Litchfield
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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