St. Louis

$203+ Cheap flights from Costa Rica to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — STL
Mar 7 — Mar 141
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Cheap flight deals from Costa Rica to St. Louis

Cheapest flights from Costa Rica to St. Louis
Explore the most affordable flight options available from Costa Rica to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 5, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/412:35 pm
SJO
-
STL
1 stop9h 52m
Multiple Airlines
Mon 3/94:51 pm
STL
-
SJO
1 stop18h 49m
Multiple Airlines
Deal found 2/3$278
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/412:35 pm
SJO
-
STL
1 stop9h 52m
Multiple Airlines
Tue 3/104:51 pm
STL
-
SJO
1 stop18h 49m
Multiple Airlines
Deal found 2/3$281
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/191:31 pm
SJO
-
STL
2 stops17h 20m
Multiple Airlines
Tue 2/243:49 pm
STL
-
SJO
1 stop19h 51m
Multiple Airlines
Deal found 2/3$284
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/171:31 pm
SJO
-
STL
2 stops17h 20m
Multiple Airlines
Tue 2/243:49 pm
STL
-
SJO
1 stop19h 51m
Multiple Airlines
Deal found 2/3$304
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1011:35 am
SJO
-
STL
1 stop10h 44m
Multiple Airlines
Tue 3/174:51 pm
STL
-
SJO
1 stop18h 51m
Multiple Airlines
Deal found 2/3$310
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:35 pm
SJO
-
STL
2 stops18h 16m
Multiple Airlines
Tue 3/104:51 pm
STL
-
SJO
1 stop18h 49m
Multiple Airlines
Deal found 2/3$317
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:45 am
SJO
-
STL
2 stops23h 06m
Multiple Airlines
Tue 3/33:49 pm
STL
-
SJO
1 stop19h 51m
Multiple Airlines
Deal found 2/2$318
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2512:35 pm
SJO
-
STL
1 stop9h 52m
Multiple Airlines
Tue 3/33:49 pm
STL
-
SJO
1 stop19h 51m
Multiple Airlines
Deal found 2/3$336
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:35 am
SJO
-
STL
1 stop10h 44m
Multiple Airlines
Tue 3/178:06 pm
STL
-
SJO
2 stops15h 36m
Multiple Airlines
Deal found 2/3$340

Find flight deals from Costa Rica to St. Louis

Keep the following information in mind while searching for Costa Rica to St. Louis flight deals. Data was last updated February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$278
(Kiwi.com)

One-way from

$203
(Delta)

Popular in

January

Cheapest in

September

Average price

$473
Provider with most accurate pricing for San José Juan Santamaria Intl-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Lambert-St Louis flights.
From Costa Rica to Lambert-St Louis
One-way flight from Costa Rica to Lambert-St Louis
Highest demand for flights based on searches. 8% potential increase in price ($43 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
Average for round-trip flights in February 2026

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated February 5, 2026.
Use the filters below to find and compare flights from Costa Rica to St. Louis that are best for you.

Fly from

Costa Rica

Fly to

St. Louis

Route

Depart

Return

Price

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 3/11

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 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-10:36 am

2 stops22h 01m

Lambert-St Louis

Tue 3/10

7:40 am-6:53 pm

2 stops12h 13m

$374

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 3/4

12:35 pm-10:36 am

2 stops22h 01m

Lambert-St Louis

Mon 3/9

7:00 pm-9:32 pm

2 stops27h 32m

$374

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 2/25

12:35 am-5:13 pm

1 stop16h 38m

Lambert-St Louis

Mon 3/2

5:14 am-8:33 pm

1 stop15h 19m

$379

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

Mon 2/23

3:49 pm-11:40 am

1 stop19h 51m

$380

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

6:29 am-7:07 pm

2 stops13h 38m

$386

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 5/21

1:25 pm-11:59 pm

1 stop9h 34m

$203

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/22

11:13 am-5:49 pm

1 stop29h 36m

$203

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 19 results
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Best time to book a flight from Costa Rica to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Costa Rica with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Costa Rica to St. Louis

What is the cheapest month to book a flight from Costa Rica to St. Louis?

Currently, April is the cheapest month in which you can book a flight from Costa Rica to St. Louis (average of $220). Flying from Costa Rica to St. Louis in January is currently the most expensive (average of $416). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated February 5, 2026.
See what other customers who have flown with United Airlines and American Airlines from Costa Rica to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Costa Rica to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to St. Louis from Costa Rica?

    If you book a flight to St. Louis from Costa Rica, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • Can I find deals for flights from Costa Rica to St. Louis that include hotel bookings?

    Yes. In addition to deals on Costa Rica to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Costa Rica to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Costa Rica to St. Louis.

  • Can I find deals for business class flights from Costa Rica to St. Louis?

    Yes. Cheapflights offers flight deals from Costa Rica to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Costa Rica to St. Louis?

    Currently, April is the cheapest month in which you can book a flight from Costa Rica to St. Louis (average of $220). Flying from Costa Rica to St. Louis in January is currently the most expensive (average of $416). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Costa Rica to St. Louis

Discover the top 2 airlines that operate flights from Costa Rica to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$274Average$468FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$306Average$419FlexibilityNo cancel feeOn-time69%

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