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Cheap flights from Costa Rica to St. Louis from $203

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 5/21. 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 - 10:27 pm
SJO
-
STL
9h 52m
1 stop
Multiple Airlines Logo
4:51 pm - 10:40 am
STL
-
SJO
18h 49m
1 stop
$278Multiple Airlines
Wed, Mar 4 - Mon, Mar 9
Multiple Airlines Logo
12:35 pm - 10:27 pm
SJO
-
STL
9h 52m
1 stop
Multiple Airlines Logo
4:51 pm - 10:40 am
STL
-
SJO
18h 49m
1 stop
$281Multiple Airlines
Wed, Mar 4 - Tue, Mar 10
Multiple Airlines Logo
1:31 pm - 6:51 am
SJO
-
STL
17h 20m
2 stops
Multiple Airlines Logo
3:49 pm - 11:40 am
STL
-
SJO
19h 51m
1 stop
$284Multiple Airlines
Thu, Feb 19 - Tue, Feb 24
Multiple Airlines Logo
1:31 pm - 6:51 am
SJO
-
STL
17h 20m
2 stops
Multiple Airlines Logo
3:49 pm - 11:40 am
STL
-
SJO
19h 51m
1 stop
$304Multiple Airlines
Tue, Feb 17 - Tue, Feb 24
Multiple Airlines Logo
12:35 pm - 10:27 pm
SJO
-
STL
9h 52m
1 stop
Multiple Airlines Logo
2:09 pm - 10:40 am
STL
-
SJO
21h 31m
2 stops
$308Multiple Airlines
Wed, Mar 4 - Mon, Mar 9
Multiple Airlines Logo
11:35 am - 11:19 pm
SJO
-
STL
10h 44m
1 stop
Multiple Airlines Logo
4:51 pm - 10:42 am
STL
-
SJO
18h 51m
1 stop
$310Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Multiple Airlines Logo
12:35 pm - 6:51 am
SJO
-
STL
18h 16m
2 stops
Multiple Airlines Logo
4:51 pm - 10:40 am
STL
-
SJO
18h 49m
1 stop
$317Multiple Airlines
Tue, Mar 3 - Tue, Mar 10
Multiple Airlines Logo
7:45 am - 6:51 am
SJO
-
STL
23h 06m
2 stops
Multiple Airlines Logo
3:49 pm - 11:40 am
STL
-
SJO
19h 51m
1 stop
$318Multiple Airlines
Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
12:35 pm - 10:27 pm
SJO
-
STL
9h 52m
1 stop
Multiple Airlines Logo
8:06 pm - 10:40 am
STL
-
SJO
15h 34m
2 stops
$325Multiple Airlines
Wed, Mar 4 - Tue, Mar 10
Multiple Airlines Logo
11:35 am - 10:37 am
SJO
-
STL
22h 02m
2 stops
Multiple Airlines Logo
4:51 pm - 10:42 am
STL
-
SJO
18h 51m
1 stop
$330Multiple Airlines
Tue, Mar 10 - Tue, Mar 17

American Airlines flights from Costa Rica to St. Louis

Our best American Airlines deals on Costa Rica to St. Louis flight tickets
American Airlines
Feb 25
SJO12:35 amSan José Juan Santamaria Intl
16h 38m
1 stop
STL5:13 pmLambert-St Louis
Mar 2
STL5:14 amLambert-St Louis
15h 19m
1 stop
SJO8:33 pmSan José Juan Santamaria Intl
$379
American Airlines
May 1
SJO6:30 amSan José Juan Santamaria Intl
14h 54m
1 stop
STL10:24 pmLambert-St Louis
May 12
STL5:24 amLambert-St Louis
14h 43m
1 stop
SJO7:07 pmSan José Juan Santamaria Intl
$381
American Airlines
May 1
SJO11:35 pmSan José Juan Santamaria Intl
18h 55m
1 stop
STL7:30 pmLambert-St Louis
May 12
STL6:11 pmLambert-St Louis
20h 11m
1 stop
SJO1:22 pmSan José Juan Santamaria Intl
$382

United Airlines flights from Costa Rica to St. Louis

Our best United Airlines deals on Costa Rica to St. Louis flight tickets
United Airlines
Feb 17
SJO11:28 pmSan José Juan Santamaria Intl
16h 34m
2 stops
STL4:02 pmLambert-St Louis
Feb 24
STL6:25 amLambert-St Louis
14h 14m
2 stops
SJO8:39 pmSan José Juan Santamaria Intl
$399
United Airlines
Feb 11
SJO2:20 pmSan José Juan Santamaria Intl
31h 20m
2 stops
STL9:40 pmLambert-St Louis
Feb 17
STL6:00 amLambert-St Louis
14h 39m
1 stop
SJO8:39 pmSan José Juan Santamaria Intl
$429
United Airlines
Feb 26
SJO2:20 pmSan José Juan Santamaria Intl
30h 45m
2 stops
STL9:05 pmLambert-St Louis
Mar 2
STL9:55 amLambert-St Louis
27h 20m
2 stops
SJO1:15 pmSan José Juan Santamaria Intl
$432

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 3, 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

Wed 3/4

12:35 pm-10:27 pm

1 stop9h 52m

Lambert-St Louis

Mon 3/9

4:51 pm-10:40 am

1 stop18h 49m

$278

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 3/4

12:35 pm-10:27 pm

1 stop9h 52m

Lambert-St Louis

Tue 3/10

4:51 pm-10:40 am

1 stop18h 49m

$281

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/19

1:31 pm-6:51 am

2 stops17h 20m

Lambert-St Louis

Tue 2/24

3:49 pm-11:40 am

1 stop19h 51m

$284

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 2/17

1:31 pm-6:51 am

2 stops17h 20m

Lambert-St Louis

Tue 2/24

3:49 pm-11:40 am

1 stop19h 51m

$304

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 3/4

12:35 pm-10:27 pm

1 stop9h 52m

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

Tue 3/10

11:35 am-11:19 pm

1 stop10h 44m

Lambert-St Louis

Tue 3/17

4:51 pm-10:42 am

1 stop18h 51m

$310

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 3/3

12:35 pm-6:51 am

2 stops18h 16m

Lambert-St Louis

Tue 3/10

4:51 pm-10:40 am

1 stop18h 49m

$317

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 2/24

7:45 am-6:51 am

2 stops23h 06m

Lambert-St Louis

Tue 3/3

3:49 pm-11:40 am

1 stop19h 51m

$318

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 3/4

12:35 pm-10:27 pm

1 stop9h 52m

Lambert-St Louis

Tue 3/10

8:06 pm-10:40 am

2 stops15h 34m

$325

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 3/10

11:35 am-10:37 am

2 stops22h 02m

Lambert-St Louis

Tue 3/17

4:51 pm-10:42 am

1 stop18h 51m

$330

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 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, September 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 $362. The month of October 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 5% 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

9h 39m

Direct flights

None
The fastest flight from Costa Rica to St. Louis takes 9h 39m
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
11,216 reviews
Search American Airlines flights
United AirlinesPriceFrom $306Free CancellationRating
7.4
9,236 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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