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Cheap flights from Costa Rica to St. Louis from $222

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 3/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.
Southwest Logo
1:10 pm - 11:55 pm
SJO
-
STL
9h 45m
1 stop
Southwest Logo
5:30 am - 12:10 pm
STL
-
SJO
7h 40m
1 stop
$356Southwest
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
$361American Airlines
Fri, May 1 - Tue, May 12
American Airlines Logo
11:35 pm - 8:54 am
SJO
-
STL
8h 19m
1 stop
American Airlines Logo
7:12 am - 1:22 pm
STL
-
SJO
7h 10m
1 stop
$363American 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
7:00 am - 7:07 pm
STL
-
SJO
13h 07m
2 stops
$366American Airlines
Fri, May 1 - Tue, May 12
American Airlines Logo
11:35 pm - 8:54 am
SJO
-
STL
8h 19m
1 stop
American Airlines Logo
7:05 am - 7:07 pm
STL
-
SJO
13h 02m
2 stops
$367American Airlines
Fri, May 1 - Tue, May 12
American Airlines Logo
11:35 pm - 8:54 am
SJO
-
STL
8h 19m
1 stop
American Airlines Logo
7:00 am - 7:07 pm
STL
-
SJO
13h 07m
2 stops
$368American Airlines
Fri, May 1 - Tue, May 12
United Airlines Logo
1:25 pm - 1:23 pm
SJO
-
STL
22h 58m
2 stops
United Airlines Logo
9:14 am - 12:21 pm
STL
-
SJO
28h 07m
2 stops
$370United Airlines
Fri, May 1 - Tue, May 12
Delta Logo
7:00 am - 5:53 pm
SJO
-
STL
9h 53m
1 stop
Delta Logo
6:00 am - 11:55 am
STL
-
SJO
6h 55m
1 stop
$391Delta
Tue, Apr 7 - Fri, Apr 10
United Airlines Logo
7:45 am - 9:21 am
SJO
-
STL
24h 36m
1 stop
United Airlines Logo
10:05 am - 5:16 pm
STL
-
SJO
8h 11m
1 stop
$392United Airlines
Tue, Mar 17 - Tue, Mar 24
American Airlines Logo
11:35 pm - 5:21 pm
SJO
-
STL
16h 46m
1 stop
American Airlines Logo
7:12 am - 1:22 pm
STL
-
SJO
7h 10m
1 stop
$405American Airlines
Fri, May 1 - Fri, May 8

United Airlines flights from Costa Rica to St. Louis

Our best United Airlines deals on Costa Rica to St. Louis flight tickets
United Airlines
May 1
SJO1:25 pmSan José Juan Santamaria Intl
22h 58m
2 stops
STL1:23 pmLambert-St Louis
May 12
STL9:14 amLambert-St Louis
28h 07m
2 stops
SJO12:21 pmSan José Juan Santamaria Intl
$370
United Airlines
Mar 17
SJO7:45 amSan José Juan Santamaria Intl
24h 36m
1 stop
STL9:21 amLambert-St Louis
Mar 24
STL10:05 amLambert-St Louis
8h 11m
1 stop
SJO5:16 pmSan José Juan Santamaria Intl
$392
United Airlines
Mar 25
SJO11:35 amSan José Juan Santamaria Intl
26h 07m
2 stops
STL2:42 pmLambert-St Louis
Mar 31
STL7:45 amLambert-St Louis
27h 26m
2 stops
SJO10:11 amSan José Juan Santamaria Intl
$413

American Airlines flights from Costa Rica to St. Louis

Our best American Airlines deals on Costa Rica to St. Louis flight tickets
American Airlines
May 1
SJO11:35 pmSan José Juan Santamaria Intl
16h 46m
1 stop
STL5:21 pmLambert-St Louis
May 12
STL6:11 pmLambert-St Louis
20h 11m
1 stop
SJO1:22 pmSan José Juan Santamaria Intl
$361
American Airlines
May 1
SJO11:35 pmSan José Juan Santamaria Intl
8h 19m
1 stop
STL8:54 amLambert-St Louis
May 12
STL7:12 amLambert-St Louis
7h 10m
1 stop
SJO1:22 pmSan 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
$366

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 17, 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 5/1

1:10 pm-11:55 pm

1 stop9h 45m

Lambert-St Louis

Tue 5/12

5:30 am-12:10 pm

1 stop7h 40m

$356

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

$361

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/1

11:35 pm-8:54 am

1 stop8h 19m

Lambert-St Louis

Tue 5/12

7:12 am-1:22 pm

1 stop7h 10m

$363

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

7:00 am-7:07 pm

2 stops13h 07m

$366

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/1

11:35 pm-8:54 am

1 stop8h 19m

Lambert-St Louis

Tue 5/12

7:05 am-7:07 pm

2 stops13h 02m

$367

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/1

11:35 pm-8:54 am

1 stop8h 19m

Lambert-St Louis

Tue 5/12

7:00 am-7:07 pm

2 stops13h 07m

$368

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/1

1:25 pm-1:23 pm

2 stops22h 58m

Lambert-St Louis

Tue 5/12

9:14 am-12:21 pm

2 stops28h 07m

$370

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 4/7

7:00 am-5:53 pm

1 stop9h 53m

Lambert-St Louis

Fri 4/10

6:00 am-11:55 am

1 stop6h 55m

$391

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 3/17

7:45 am-9:21 am

1 stop24h 36m

Lambert-St Louis

Tue 3/24

10:05 am-5:16 pm

1 stop8h 11m

$392

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

Fri 5/8

7:12 am-1:22 pm

1 stop7h 10m

$405

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, 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 33% 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
11,294 reviews
Search American Airlines flights
United AirlinesPriceFrom $306Free CancellationRating
7.4
9,308 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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