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Cheap flights from Costa Rica to St. Louis from $225

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Costa Rica to St. Louis departing on 7/30. 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
0 bags

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Find the cheapest flights from Costa Rica to St. Louis

Recent round-trip flight deals from Costa Rica to St. Louis

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:35 pm - 11:19 pm
SJO
-
STL
10h 44m
1 stop
Multiple Airlines Logo
4:51 pm - 10:40 am
STL
-
SJO
18h 49m
1 stop
$281Multiple Airlines
Fri, Mar 6 - Mon, Mar 9
Multiple Airlines Logo
12:35 pm - 11:19 pm
SJO
-
STL
10h 44m
1 stop
Multiple Airlines Logo
2:09 pm - 10:40 am
STL
-
SJO
21h 31m
2 stops
$308Multiple Airlines
Fri, Mar 6 - Mon, Mar 9
Multiple Airlines Logo
12:35 pm - 7:02 am
SJO
-
STL
18h 27m
1 stop
Multiple Airlines Logo
4:51 pm - 10:40 am
STL
-
SJO
18h 49m
1 stop
$322Multiple Airlines
Fri, Mar 6 - Mon, Mar 9
Multiple Airlines Logo
12:35 pm - 7:02 am
SJO
-
STL
18h 27m
1 stop
Multiple Airlines Logo
2:09 pm - 10:40 am
STL
-
SJO
21h 31m
2 stops
$335Multiple Airlines
Fri, Mar 6 - Mon, Mar 9
United Airlines Logo
2:20 pm - 10:36 am
SJO
-
STL
20h 16m
2 stops
United Airlines Logo
7:00 pm - 9:32 pm
STL
-
SJO
27h 32m
2 stops
$347United Airlines
Fri, Mar 6 - Mon, Mar 9
American Airlines Logo
11:24 am - 11:35 pm
SJO
-
STL
12h 11m
2 stops
American Airlines Logo
9:37 am - 7:33 pm
STL
-
SJO
10h 56m
2 stops
$350American Airlines
Fri, Mar 6 - Mon, Mar 9
American Airlines Logo
11:35 pm - 5:21 pm
SJO
-
STL
16h 46m
1 stop
American Airlines Logo
3:24 pm - 11:25 am
STL
-
SJO
21h 01m
1 stop
$363American Airlines
Fri, May 1 - Tue, May 12
United Airlines Logo
1:25 pm - 10:28 pm
SJO
-
STL
8h 03m
1 stop
United Airlines Logo
7:45 am - 12:21 pm
STL
-
SJO
29h 36m
2 stops
$364United Airlines
Wed, Apr 22 - Wed, Apr 29
American Airlines Logo
6:30 am - 11:46 pm
SJO
-
STL
16h 16m
2 stops
American Airlines Logo
7:12 am - 7:07 pm
STL
-
SJO
12h 55m
2 stops
$367American Airlines
Fri, May 1 - Tue, May 12
American Airlines Logo
11:35 pm - 5:21 pm
SJO
-
STL
16h 46m
1 stop
American Airlines Logo
6:11 pm - 1:22 pm
STL
-
SJO
20h 11m
1 stop
$375American Airlines
Fri, May 1 - Tue, May 12

United Airlines flights from Costa Rica to St. Louis

Our best United Airlines deals on Costa Rica to St. Louis flight tickets
United Airlines
Mar 6
SJO2:20 pmSan José Juan Santamaria Intl
20h 16m
2 stops
STL10:36 amLambert-St Louis
Mar 9
STL7:00 pmLambert-St Louis
27h 32m
2 stops
SJO9:32 pmSan José Juan Santamaria Intl
$347
United Airlines
Apr 22
SJO1:25 pmSan José Juan Santamaria Intl
8h 03m
1 stop
STL10:28 pmLambert-St Louis
Apr 29
STL7:45 amLambert-St Louis
29h 36m
2 stops
SJO12:21 pmSan José Juan Santamaria Intl
$364
United Airlines
May 26
SJO12:30 amSan José Juan Santamaria Intl
8h 23m
1 stop
STL9:53 amLambert-St Louis
Jun 3
STL5:29 pmLambert-St Louis
17h 42m
2 stops
SJO10:11 amSan José Juan Santamaria Intl
$381

American Airlines flights from Costa Rica to St. Louis

Our best American Airlines deals on Costa Rica to St. Louis flight tickets
American Airlines
Mar 6
SJO11:24 amSan José Juan Santamaria Intl
12h 11m
2 stops
STL11:35 pmLambert-St Louis
Mar 9
STL9:37 amLambert-St Louis
10h 56m
2 stops
SJO7:33 pmSan José Juan Santamaria Intl
$350
American Airlines
May 1
SJO11:35 pmSan José Juan Santamaria Intl
8h 19m
1 stop
STL8:54 amLambert-St Louis
May 12
STL3:24 pmLambert-St Louis
21h 01m
1 stop
SJO11:25 amSan José Juan Santamaria Intl
$363
American Airlines
May 1
SJO11:35 pmSan José Juan Santamaria Intl
16h 46m
1 stop
STL5:21 pmLambert-St Louis
May 12
STL7:00 amLambert-St Louis
13h 07m
2 stops
SJO7:07 pmSan José Juan Santamaria Intl
$367

momondo Fare Finder

 
Customize your flight search to find flights from Costa Rica 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 February 11, 2026.
Use the filters below to find and compare flights from Costa Rica to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 3/6

12:35 pm-11:19 pm

1 stop10h 44m

Lambert-St Louis

Mon 3/9

4:51 pm-10:40 am

1 stop18h 49m

$281

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 3/6

12:35 pm-11:19 pm

1 stop10h 44m

Lambert-St Louis

Mon 3/9

2:09 pm-10:40 am

2 stops21h 31m

$308

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 3/6

12:35 pm-7:02 am

1 stop18h 27m

Lambert-St Louis

Mon 3/9

4:51 pm-10:40 am

1 stop18h 49m

$322

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 3/6

12:35 pm-7:02 am

1 stop18h 27m

Lambert-St Louis

Mon 3/9

2:09 pm-10:40 am

2 stops21h 31m

$335

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 3/6

2:20 pm-10:36 am

2 stops20h 16m

Lambert-St Louis

Mon 3/9

7:00 pm-9:32 pm

2 stops27h 32m

$347

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 3/6

11:24 am-11:35 pm

2 stops12h 11m

Lambert-St Louis

Mon 3/9

9:37 am-7:33 pm

2 stops10h 56m

$350

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/1

11:35 pm-5:21 pm

1 stop16h 46m

Lambert-St Louis

Tue 5/12

3:24 pm-11:25 am

1 stop21h 01m

$363

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 4/22

1:25 pm-10:28 pm

1 stop8h 03m

Lambert-St Louis

Wed 4/29

7:45 am-12:21 pm

2 stops29h 36m

$364

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/1

6:30 am-11:46 pm

2 stops16h 16m

Lambert-St Louis

Tue 5/12

7:12 am-7:07 pm

2 stops12h 55m

$367

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/1

11:35 pm-5:21 pm

1 stop16h 46m

Lambert-St Louis

Tue 5/12

6:11 pm-1:22 pm

1 stop20h 11m

$375

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Costa Rica 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 cheapest month to fly to St. Louis?

In general, October is the cheapest month to fly from Costa Rica 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 Costa Rica averaging around $362.

Can stopping save me money on Costa Rica to St. Louis flights?

You could potentially save up to 1% on your flight if you consider stops on a Costa Rica to St. Louis flight.

Cheap Costa Rica to St. Louis flight deals and tips

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

Fastest flight time

7h 54m

Direct flights

None
The fastest flight from Costa Rica to St. Louis takes 7h 54m
There are no direct flights from Costa Rica to St. Louis. There are no popular flight routes from Costa Rica to St. Louis.
Search flight deals

  • When did momondo last update prices for flights from Costa Rica to Lambert-St Louis Airport?

    Prices for flights from Costa Rica to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Costa Rica to Lambert-St Louis Airport?

  • How old do you have to be to fly from Costa Rica to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Costa Rica to Lambert-St Louis Airport.

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

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Costa Rica to St. Louis

Compare and see reviews for airlines that fly from Costa Rica to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $274Free CancellationRating
7.2
11,265 reviews
Search American Airlines flights
United AirlinesPriceFrom $306Free CancellationRating
7.4
9,273 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
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Costa Rica to St. Louis?

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

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

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

How can momondo help me find flights from Costa Rica to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Costa Rica. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Costa Rica to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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