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St. Louis

$176+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — STL
Jan 24 — Jan 311
Sat 1/24
Sat 1/31
1 adult, Economy
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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 December 25, 2025.

This Delta deal was found by Cheapflights users on 12/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amSJO - STL
1 stop9h 28mDelta
Thu 1/19:47 amSTL - SJO
1 stop12h 08mDelta
Deal found 12/24$438
This American Airlines deal was found by Cheapflights users on 12/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/261:31 pmSJO - STL
1 stop19h 04mAmerican Airlines
Sat 1/36:00 pmSTL - SJO
1 stop16h 32mAmerican Airlines
Deal found 12/24$457
This American Airlines deal was found by Cheapflights users on 12/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:34 amSJO - STL
1 stop16h 36mAmerican Airlines
Tue 12/306:00 pmSTL - SJO
1 stop20h 16mAmerican Airlines
Deal found 12/24$458
This United Airlines deal was found by Cheapflights users on 12/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/262:20 pmSJO - STL
2 stops22h 07mUnited Airlines
Tue 12/308:05 amSTL - SJO
2 stops14h 27mUnited Airlines
Deal found 12/24$470
This United Airlines deal was found by Cheapflights users on 12/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:30 amSJO - STL
2 stops16h 13mUnited Airlines
Sat 1/38:05 amSTL - SJO
2 stops14h 27mUnited Airlines
Deal found 12/23$554
This Kiwi.com deal was found by Cheapflights users on 12/24. 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 12/255:00 amSJO - STL
3 stops35h 28mMultiple Airlines
Wed 12/316:00 amSTL - SJO
2 stops17h 15mMultiple Airlines
Deal found 12/24$881
This Kiwi.com deal was found by Cheapflights users on 12/24. 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 12/255:00 amSJO - STL
3 stops29h 02mMultiple Airlines
Thu 1/16:00 amSTL - SJO
2 stops17h 40mMultiple Airlines
Deal found 12/24$985

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 December 25, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$312
(United Airlines)

One-way from

$176
(Delta)

Popular in

January

Cheapest in

October

Average price

$365
Provider with most accurate pricing for San José Juan Santamaria Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Lambert-St Louis flights.
Search Deals
From Costa Rica to Lambert-St Louis
Search Deals
One-way flight from Costa Rica to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 25, 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

Fri 1/23

6:30 am-10:00 pm

1 stop15h 30m

Lambert-St Louis

Mon 1/26

6:00 am-1:15 pm

1 stop7h 15m

$312

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

3:04 pm-8:52 am

1 stop17h 48m

Lambert-St Louis

Mon 3/2

5:14 am-2:53 pm

1 stop9h 39m

$357

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/22

11:13 am-4:35 pm

1 stop28h 22m

Lambert-St Louis

Sat 5/30

6:00 pm-10:11 am

1 stop17h 11m

$380

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 1/23

6:30 am-10:00 pm

1 stop15h 30m

$176

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 1/23

7:00 am-5:50 pm

1 stop10h 50m

$176

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 1/21

7:00 am-4:07 pm

1 stop9h 07m

$176

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 1/22

7:00 am-5:50 pm

1 stop10h 50m

$176

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 1/21

8:00 am-11:12 pm

2 stops15h 12m

$185

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 1/22

2:20 pm-2:30 pm

2 stops24h 10m

$198

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 1/22

8:05 pm-11:33 pm

2 stops27h 28m

$206

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/24

Showing 1-10 of 14 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 $449). 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 December 25, 2025.

It’s optimal to fly from Costa Rica to St. Louis in the morning. By choosing this option you can save up to 31% on the cost of your flight, compared to a flight in the evening.

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 December 25, 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
9,116 reviews

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,116 reviews
United Airlines
7.4
Good
9,116 reviews

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
American Airlines
7.2
Good
11,056 reviews
United Airlines
7.4
Good
9,116 reviews

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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 15h 30m. Airlines will cover a distance of 2022 mi.

  • 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 $449). 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 December 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$274Average$465FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$328Average$424FlexibilityNo cancel feeOn-time69%

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