HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Costa Rica

$140+ Cheap flights from St. Louis (STL) to Costa Rica

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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJO
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Costa Rica with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Costa Rica

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Costa Rica (CR0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Round-trip from

$286
(FlightHub)

One-way from

$140
(Kiwi.com)
From Lambert-St Louis to Costa Rica
Search Deals
One-way flight from Lambert-St Louis to Costa Rica
Search Deals

Find flight deals from St. Louis to Costa Rica

Cheapest flights from St. Louis to Costa Rica
Explore the most affordable flight options available from St. Louis to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This United deal was found by Cheapflights users on 12/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/238:00 amSTL - LIR
2 stops27h 24mUnited Airlines
Sat 12/2812:30 pmLIR - STL
1 stop9h 15mUnited Airlines
Deal found 12/17$788
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Thu 12/196:00 amSTL - SJO
1 stop7h 17mUnited Airlines
Tue 12/316:30 amSJO - STL
1 stop17h 29mUnited Airlines
Deal found 12/18$826
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/246:00 amSTL - SJO
1 stop29h 25mMultiple Airlines
Tue 1/712:27 pmSJO - STL
1 stop26h 07mMultiple Airlines
Deal found 12/17$885
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Sat 12/217:04 amSTL - SJO
1 stop14h 06mAmerican Airlines
Mon 12/306:29 amSJO - STL
1 stop10h 10mAmerican Airlines
Deal found 12/17$891
This FlightHub deal was found by Cheapflights users on 12/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/244:27 pmSTL - SJO
1 stop8h 27mSpirit Airlines
Mon 1/61:49 amSJO - STL
1 stop13h 32mSpirit Airlines
Deal found 12/17$914
This Delta deal was found by Cheapflights users on 12/18. 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.
Tue 12/2412:55 pmSTL - SJO
1 stop9h 00mDelta
Wed 1/17:05 amSJO - STL
1 stop9h 07mDelta
Deal found 12/18$931
This Southwest deal was found by Cheapflights users on 12/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:10 amSTL - SJO
1 stop6h 35mSouthwest
Wed 1/19:55 amSJO - STL
2 stops10h 50mSouthwest
Deal found 12/18$964
This Copa Airlines deal was found by Cheapflights users on 12/17. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/216:00 amSTL - SJO
2 stops25h 39mCopa Airlines
Mon 12/308:44 amSJO - STL
2 stops15h 15mCopa Airlines
Deal found 12/17$1,199
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Sat 12/285:29 pmSTL - LIR
2 stops17h 12mAmerican Airlines
Sat 1/411:41 amLIR - STL
2 stops12h 20mAmerican Airlines
Deal found 12/17$2,103
This Alaska Airlines deal was found by Cheapflights users on 12/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/245:21 amSTL - SJO
3 stops18h 37mAlaska Airlines
Mon 1/61:12 amSJO - STL
3 stops22h 45mAlaska Airlines
Deal found 12/17$2,262

Find flights from St. Louis to Costa Rica within your budget

Customize your flight search to find flights from St. Louis to Costa Rica 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 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 1/28

3:48 pm-12:59 am

1 stop9h 11m

San José Juan Santamaria Intl

Mon 2/3

1:57 am-2:43 pm

1 stop12h 46m

$286

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 2/3

5:05 pm-11:18 am

1 stop18h 13m

San José Juan Santamaria Intl

Sat 2/8

12:25 pm-11:31 pm

1 stop11h 06m

$323

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Wed 1/8

6:29 pm-12:30 pm

1 stop18h 01m

Liberia

Tue 1/14

3:35 pm-12:45 pm

2 stops21h 10m

$388

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Fri 2/28

5:13 am-9:19 pm

1 stop16h 06m

San José Juan Santamaria Intl

Thu 3/6

12:59 am-10:38 am

1 stop9h 39m

$395

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Fri 4/25

5:18 pm-11:55 am

1 stop19h 37m

San José Juan Santamaria Intl

Mon 4/28

11:13 am-10:09 pm

1 stop9h 56m

$402

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Wed 1/8

10:55 am-5:57 pm

1 stop7h 02m

Liberia

Tue 1/14

8:50 am-10:20 pm

1 stop13h 30m

$467

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 2/3

8:15 am-8:08 am

2 stops23h 53m

San José Juan Santamaria Intl

Mon 2/10

4:09 am-6:28 pm

2 stops14h 19m

$525

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Fri 4/4

9:55 pm-11:30 am

1 stop14h 35m

San José Juan Santamaria Intl

Tue 4/8

8:45 am-7:55 pm

2 stops10h 10m

$628

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Wed 2/12

7:15 am-2:29 pm

1 stop7h 14m

Liberia

Mon 2/17

3:54 pm-11:37 pm

1 stop7h 43m

$694

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Thu 1/23

2:49 pm-5:02 pm

3 stops26h 13m

Liberia

Tue 1/28

10:00 am-1:53 pm

3 stops27h 53m

$708

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 17 results
1
2

Best time to book a flight from St. Louis to Costa Rica

Have a flexible travel schedule? Discover the best time to fly to Costa Rica from St. Louis 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.

Travel insights for flights from St. Louis to Costa Rica

Get recent, data-driven insights about flights from St. Louis to Costa Rica including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from St. Louis to Costa Rica (average of $398). Flying from St. Louis to Costa Rica in July is currently the most expensive (average of $531). 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 STL to CR?

Find hourly flight availability from St. Louis to Costa Rica. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

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

Rainfall in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Costa Rica ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit Costa Rica when rainfall is around 0.0 in.

Temperature in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Costa Rica, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).

Reviews of airlines servicing Costa Rica

Get insights into the airlines that provide service to Costa Rica. 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 Costa Rica. Reviews last updated December 18, 2024.
Read reviews from past customers who have flown Copa Airlines, United Airlines and Southwest from St. Louis to Costa Rica. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Copa Airlines
7.7
Good
1,720 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,059 reviews
Southwest
8.1
Very good
4,848 reviews

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Costa Rica. 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 from for flights from St. Louis to Costa Rica?

    If you book a flight to Costa Rica from St. Louis, you will be flying from 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.

  • What are the cheapest airlines to fly from St. Louis to Costa Rica one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $163. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from St. Louis to Costa Rica for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Costa Rica 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 St. Louis to Costa Rica?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Costa Rica (average of $398). Flying from St. Louis to Costa Rica in July is currently the most expensive (average of $531). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Liberia flights
St. Louis to San José flights
Kansas City to San José flights
St. Louis to Panama City flights
St. Louis to Philip S.W.Goldson flights
St. Louis to Liberia flights
Kansas City to Guatemala City flights
Kansas City to Panama City flights
St. Louis to Guatemala City flights
Kansas City to Philip S.W.Goldson flights
Kansas City to San Salvador flights
St. Louis to Coxen Hole flights
Springfield to San José flights
Kansas City to San Pedro Sula flights
Springfield to Philip S.W.Goldson flights
Kansas City to Coxen Hole flights
Kansas City to Managua flights
St. Louis to Managua flights
Springfield to Coxen Hole flights
Springfield to Guatemala City flights
St. Louis to San Pedro Sula flights
Columbia to Liberia flights
Springfield to Panama City flights
Kansas City to Tegucigalpa flights
St. Louis to Tegucigalpa flights

Top 5 airlines flying from St. Louis to Costa Rica

Discover the top 5 airlines that operate flights from St. Louis to Costa Rica. 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 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$247Average$342FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$389Average$637FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$397Average$588FlexibilityNo cancel feeOn-time71%
DeltaCheapest$416Average$586FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$519Average$733FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.