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St. Louis

$270+ Cheap flights from Costa Rica to St. Louis (STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — STL
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap 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 September 15, 2025.

Round-trip from

$270
(KAYAK)

Popular in

April

Cheapest in

August

Average price

$391
From Costa Rica to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find 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 September 15, 2025.

This KAYAK deal was found by Cheapflights users on 9/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2512:35 pmSJO - STL
1 stop20h 27mSpirit Airlines
Sat 11/17:15 pmSTL - SJO
1 stop18h 15mSpirit Airlines
Deal found 9/14$270
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/112:19 pmSJO - STL
1 stop20h 21mSpirit Airlines
Thu 10/910:57 amSTL - SJO
1 stop25h 33mSpirit Airlines
Deal found 9/13$280
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/112:19 pmSJO - STL
1 stop20h 21mSpirit Airlines
Sun 10/510:57 amSTL - SJO
1 stop25h 33mSpirit Airlines
Deal found 9/13$283
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 9/2511:37 amSJO - STL
1 stop24h 25mMultiple Airlines
Mon 9/291:57 pmSTL - SJO
1 stop21h 30mMultiple Airlines
Deal found 9/13$285
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/112:19 pmSJO - STL
2 stops20h 35mMultiple Airlines
Sun 10/510:57 amSTL - SJO
1 stop25h 33mMultiple Airlines
Deal found 9/13$290
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sat 9/2712:19 pmSJO - STL
1 stop20h 21mSpirit Airlines
Sun 10/510:57 amSTL - SJO
1 stop25h 33mSpirit Airlines
Deal found 9/13$291
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/112:19 pmSJO - STL
2 stops25h 45mMultiple Airlines
Thu 10/910:57 amSTL - SJO
1 stop25h 33mMultiple Airlines
Deal found 9/13$294
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sun 9/2811:37 amSJO - STL
1 stop24h 25mMultiple Airlines
Fri 10/39:32 pmSTL - SJO
1 stop13h 55mMultiple Airlines
Deal found 9/13$297
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 9/2412:19 pmSJO - STL
2 stops25h 45mMultiple Airlines
Sun 9/2810:35 amSTL - SJO
1 stop25h 39mMultiple Airlines
Deal found 9/13$300
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 9/2412:19 pmSJO - STL
2 stops25h 45mMultiple Airlines
Thu 10/210:35 amSTL - SJO
1 stop25h 39mMultiple Airlines
Deal found 9/13$301
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sat 9/2712:19 pmSJO - STL
1 stop20h 21mSpirit Airlines
Thu 10/210:35 amSTL - SJO
1 stop25h 39mSpirit Airlines
Deal found 9/13$302
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/112:19 pmSJO - STL
1 stop20h 21mMultiple Airlines
Mon 10/64:00 pmSTL - SJO
2 stops20h 30mMultiple Airlines
Deal found 9/13$306

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 September 15, 2025.
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

Wed 10/1

12:19 pm-9:40 am

1 stop20h 21m

Lambert-St Louis

Mon 10/6

4:00 pm-11:30 am

2 stops20h 30m

$306

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 10/23

1:30 pm-3:44 pm

2 stops25h 14m

Lambert-St Louis

Tue 10/28

6:15 am-7:39 pm

1 stop14h 24m

$347

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 11/26

1:11 pm-10:34 pm

1 stop9h 23m

Lambert-St Louis

Sun 11/30

5:00 am-12:31 pm

1 stop7h 31m

$356

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

8:05 am-8:09 pm

2 stops12h 04m

Lambert-St Louis

Mon 3/2

5:24 am-2:15 pm

1 stop8h 51m

$361

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 11/25

2:31 pm-9:58 pm

1 stop7h 27m

Lambert-St Louis

Sat 11/29

7:05 am-10:07 pm

1 stop15h 02m

$368

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 11/25

12:35 pm-2:25 pm

2 stops25h 50m

Lambert-St Louis

Fri 11/28

6:15 am-1:15 pm

1 stop7h 00m

$368

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 11/26

2:20 pm-10:22 pm

1 stop8h 02m

Lambert-St Louis

Fri 11/28

6:15 am-11:25 am

1 stop29h 10m

$368

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 10/2

1:30 pm-2:27 pm

2 stops23h 57m

Lambert-St Louis

Mon 10/6

8:25 am-12:26 pm

1 stop29h 01m

$377

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 10/2

7:55 am-3:44 pm

2 stops30h 49m

Lambert-St Louis

Tue 10/7

6:15 am-12:26 pm

1 stop7h 11m

$377

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 10/1

7:55 am-4:28 pm

1 stop7h 33m

Lambert-St Louis

Tue 10/7

6:15 am-12:26 pm

1 stop7h 11m

$377

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 18 results
1
2

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, August is the cheapest month in which you can book a flight from Costa Rica to St. Louis (average of $311). Flying from Costa Rica to St. Louis in March is currently the most expensive (average of $356). 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.

What is the cheapest time of day to fly from CR to STL?

Find hourly flight availability from Costa Rica to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Costa Rica to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 15, 2025.
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.
United Airlines
7.4
Good
8,931 reviews

Food

6.6

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
8,931 reviews
United Airlines
7.4
Good
8,931 reviews

Food

6.6

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,931 reviews

Food

6.6

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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.

  • How long is the flight from Costa Rica to St. Louis?

    Departing from Costa Rica to St. Louis will take you 9h 23m. Airlines will cover a distance of 2022 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, August is the cheapest month in which you can book a flight from Costa Rica to St. Louis (average of $311). Flying from Costa Rica to St. Louis in March is currently the most expensive (average of $356). 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
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$274Average$453FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$328Average$438FlexibilityNo cancel feeOn-time69%

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