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

Airlines like American Airlines, United Airlines, and Delta fly from St. Louis to Costa Rica in about 6h 40m. The time it takes to get you to your destination can typically vary by up to 5h 08m. The distance between St. Louis and Costa Rica is about 1967 mi. This flight may include one or multiple stops.

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

The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $131. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from St. Louis to Costa Rica for a low price.

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.

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).

What are the most popular airlines that fly from St. Louis to Costa Rica?

When booking a flight from St. Louis to Costa Rica, you may want to consider flying on American Airlines, United Airlines or Delta as they are the most popular for this route.

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.

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.

$143+ Flights from St. Louis to Costa Rica

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Cheap 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 23, 2025.

Mon 12/2210:30 amSTL - LIR

1 stop8h 07mUnited Airlines

Tue 12/3012:30 pmLIR - STL

1 stop10h 13mUnited Airlines

Deal found 12/21

$431

Wed 12/316:00 pmSTL - SJO

1 stop16h 32mAmerican Airlines

Sat 1/102:54 pmSJO - STL

1 stop20h 09mAmerican Airlines

Deal found 12/21

$614

Wed 12/315:02 pmSTL - SJO

2 stops20h 13mUnited Airlines

Sat 1/106:30 amSJO - STL

2 stops28h 32mUnited Airlines

Deal found 12/21

$657

Sat 12/277:04 amSTL - SJO

1 stop15h 41mAmerican Airlines

Thu 1/112:34 amSJO - STL

1 stop16h 36mAmerican Airlines

Deal found 12/22

$783

Mon 12/226:35 pmSTL - LIR

2 stops17h 51mGOL

Tue 12/301:21 pmLIR - STL

2 stops10h 34mGOL

Deal found 12/21

$847

Fri 12/266:35 pmSTL - LIR

2 stops17h 37mAmerican Airlines

Fri 1/22:37 pmLIR - STL

1 stop17h 58mAmerican Airlines

Deal found 12/20

$887

Sat 12/275:45 pmSTL - SJO

1 stop26h 54mUnited Airlines

Fri 1/26:30 amSJO - STL

1 stop27h 19mUnited Airlines

Deal found 12/21

$889

Thu 12/256:00 amSTL - SJO

1 stop7h 15mUnited Airlines

Sat 1/36:30 amSJO - STL

1 stop15h 25mUnited Airlines

Deal found 12/21

$946

Thu 12/2511:51 amSTL - SJO

1 stop24h 34mSpirit Airlines

Sat 1/31:31 pmSJO - STL

1 stop21h 25mSpirit Airlines

Deal found 12/22

$958

Tue 12/306:00 amSTL - LIR

1 stop7h 10mUnited Airlines

Tue 12/303:50 pmLIR - STL

2 stops27h 28mUnited Airlines

Deal found 12/21

$1,117

Tue 12/308:01 pmSTL - LIR

2 stops16h 11mAmerican Airlines

Tue 1/61:21 pmLIR - STL

2 stops20h 19mAmerican Airlines

Deal found 12/21

$1,129

Fri 12/266:35 pmSTL - LIR

2 stops16h 34mUnited Airlines

Fri 1/28:35 amLIR - STL

2 stops27h 52mUnited Airlines

Deal found 12/20

$1,272

Best flights from St. Louis to Costa Rica
Discover carefully curated flight deals from St. Louis to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 23, 2025.

Wed 2/411:55 amSTL - SJO

1 stop11h 48mAmerican Airlines

Wed 2/116:00 amSJO - STL

1 stop17h 59mAmerican Airlines

Deal found 12/21

$318

Tue 2/35:42 pmSTL - SJO

1 stop17h 55mMultiple Airlines

Thu 2/1212:35 pmSJO - STL

1 stop11h 24mMultiple Airlines

Deal found 12/21

$320

Wed 2/187:41 amSTL - LIR

2 stops10h 56mUnited Airlines

Thu 2/262:20 pmLIR - STL

1 stop7h 54mUnited Airlines

Deal found 12/20

$347

Sun 2/17:10 amSTL - LIR

1 stop6h 40mDelta

Thu 2/122:05 pmLIR - STL

1 stop9h 31mDelta

Deal found 12/21

$347

Tue 2/38:31 amSTL - SJO

1 stop13h 59mAmerican Airlines

Thu 2/123:04 pmSJO - STL

1 stop17h 48mAmerican Airlines

Deal found 12/22

$322

Mon 2/236:55 pmSTL - LIR

2 stops18h 15mUnited Airlines

Fri 2/272:20 pmLIR - STL

1 stop7h 54mUnited Airlines

Deal found 12/22

$347

Mon 2/27:10 amSTL - LIR

1 stop6h 40mDelta

Tue 2/102:45 pmLIR - STL

1 stop8h 40mDelta

Deal found 12/21

$347

Sun 2/17:15 amSTL - SJO

1 stop16h 28mAmerican Airlines

Thu 2/1211:25 amSJO - STL

2 stops12h 03mAmerican Airlines

Deal found 12/22

$323

Sun 2/86:00 amSTL - LIR

1 stop6h 50mDelta

Tue 2/102:45 pmLIR - STL

1 stop8h 40mDelta

Deal found 12/21

$347

Mon 1/196:00 amSTL - SJO

1 stop7h 15mUnited Airlines

Mon 1/266:30 amSJO - STL

1 stop15h 30mUnited Airlines

Deal found 12/22

$348

Mon 2/97:10 amSTL - LIR

1 stop6h 40mDelta

Tue 2/102:45 pmLIR - STL

1 stop8h 40mDelta

Deal found 12/21

$347

Mon 2/21:35 pmSTL - SJO

1 stop8h 55mAmerican Airlines

Mon 2/96:00 amSJO - STL

1 stop17h 59mAmerican Airlines

Deal found 12/21

$352

Mon 2/96:35 amSTL - LIR

2 stops30h 55mDelta

Wed 2/113:05 pmLIR - STL

1 stop8h 32mDelta

Deal found 12/21

$351

Mon 2/26:00 amSTL - SJO

1 stop16h 30mAmerican Airlines

Fri 2/1312:31 amSJO - STL

2 stops14h 14mAmerican Airlines

Deal found 12/22

$357

Mon 2/210:19 amSTL - LIR

2 stops27h 11mDelta

Thu 2/123:05 pmLIR - STL

1 stop8h 31mDelta

Deal found 12/21

$351

Sat 2/216:56 pmSTL - SJO

1 stop17h 49mAmerican Airlines

Sun 3/112:31 amSJO - STL

1 stop16h 34mAmerican Airlines

Deal found 12/21

$359

Mon 2/210:19 amSTL - LIR

2 stops27h 11mDelta

Thu 2/52:45 pmLIR - STL

1 stop8h 40mDelta

Deal found 12/21

$351

Sat 2/216:56 pmSTL - SJO

1 stop17h 49mAmerican Airlines

Sat 2/2812:31 amSJO - STL

1 stop8h 21mAmerican Airlines

Deal found 12/21

$364

Sun 2/17:10 amSTL - LIR

1 stop6h 40mDelta

Sat 2/282:45 pmLIR - STL

1 stop8h 38mDelta

Deal found 12/21

$377

Last-minute flights from St. Louis to Costa Rica
Discover last-minute flight deals from St. Louis to Costa Rica. Data last updated December 23, 2025 and is based on user searches.

Wed 1/78:05 amSTL - LIR

2 stops10h 32mUnited Airlines

Wed 1/148:35 amLIR - STL

1 stop13h 25mUnited Airlines

Deal found 12/21

$387

Fri 1/96:00 amSTL - LIR

1 stop7h 50mDelta

Thu 1/153:05 pmLIR - STL

1 stop8h 34mDelta

Deal found 12/22

$417

Sun 1/116:00 amSTL - SJO

1 stop7h 15mUnited Airlines

Fri 1/238:45 amSJO - STL

1 stop13h 15mUnited Airlines

Deal found 12/22

$397

Sun 1/115:11 pmSTL - SJO

1 stop18h 26mMultiple Airlines

Fri 1/2310:45 pmSJO - STL

3 stops56h 06mMultiple Airlines

Deal found 12/22

$399

Mon 1/196:00 amSTL - SJO

1 stop7h 15mUnited Airlines

Mon 1/266:30 amSJO - STL

1 stop15h 30mUnited Airlines

Deal found 12/22

$348

Mon 1/198:39 amSTL - SJO

1 stop26h 58mMultiple Airlines

Mon 1/261:30 pmSJO - STL

2 stops34h 03mMultiple Airlines

Deal found 12/22

$349

Wed 1/213:40 pmSTL - SJO

1 stop8h 03mAmerican Airlines

Wed 1/282:54 pmSJO - STL

1 stop8h 05mAmerican Airlines

Deal found 12/22

$318

Fri 1/306:57 pmSTL - LIR

1 stop16h 23mDelta

Tue 2/102:45 pmLIR - STL

1 stop8h 40mDelta

Deal found 12/21

$377

Fri 1/309:33 amSTL - SJO

2 stops11h 29mAmerican Airlines

Sat 2/72:54 pmSJO - STL

1 stop20h 09mAmerican Airlines

Deal found 12/22

$390

Sat 1/318:22 pmSTL - SJO

2 stops40h 00mMultiple Airlines

Thu 2/1212:35 pmSJO - STL

1 stop11h 24mMultiple Airlines

Deal found 12/21

$346

Sat 1/316:00 amSTL - LIR

1 stop7h 50mDelta

Tue 2/102:45 pmLIR - STL

2 stops29h 58mDelta

Deal found 12/21

$381

Sat 1/3110:00 amSTL - SJO

1 stop11h 02mAmerican Airlines

Thu 2/123:04 pmSJO - STL

1 stop17h 48mAmerican Airlines

Deal found 12/22

$388

One-way flights from St. Louis to Costa Rica
Search for one-way flight options from St. Louis to Costa Rica. Find affordable one-way fares based on user searches. Data last updated December 23, 2025.

Sat 2/216:56 pmSTL - SJO

1 stop17h 49mAmerican Airlines

Deal found 12/21

$143

Sat 2/218:17 pmSTL - SJO

3 stops40h 05mMultiple Airlines

Deal found 12/21

$154

Fri 1/168:32 pmSTL - SJO

1 stop17h 10mFrontier

Deal found 12/22

$213

Fri 1/169:57 amSTL - SJO

2 stops27h 18mUnited Airlines

Deal found 12/22

$306

Fri 1/168:30 amSTL - SJO

3 stops29h 10mAvianca

Deal found 12/22

$564

Find flight deals from St. Louis to Costa Rica

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$308 (Kiwi.com)
One-way from	$143 (American Airlines)
Popular in	December
Cheapest in	October
Average price	$1,140

Provider with most accurate pricing for Lambert-St Louis-San José Juan Santamaria Intl flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-San José Juan Santamaria Intl flights.

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From Lambert-St Louis to Costa Rica

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One-way flight from Lambert-St Louis to Costa Rica

Search Deals

Highest demand for flights based on searches. 19% potential increase in price ($140 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 9% potential price decrease ($51 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Costa Rica that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Wed 2/4

11:55 am-11:43 pm

1 stop11h 48m

San José Juan Santamaria Intl

Wed 2/11

6:00 am-11:59 pm

1 stop17h 59m

$318

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 2/3

5:42 pm-11:37 am

1 stop17h 55m

San José Juan Santamaria Intl

Thu 2/12

12:35 pm-11:59 pm

1 stop11h 24m

$320

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 2/3

8:31 am-10:30 pm

1 stop13h 59m

San José Juan Santamaria Intl

Thu 2/12

3:04 pm-8:52 am

1 stop17h 48m

$322

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sun 2/1

7:15 am-11:43 pm

1 stop16h 28m

San José Juan Santamaria Intl

Thu 2/12

11:25 am-11:28 pm

2 stops12h 03m

$323

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Wed 2/18

7:41 am-6:37 pm

2 stops10h 56m

Liberia

Thu 2/26

2:20 pm-10:14 pm

1 stop7h 54m

$347

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Sun 2/1

7:10 am-1:50 pm

1 stop6h 40m

Liberia

Thu 2/12

2:05 pm-11:36 pm

1 stop9h 31m

$347

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Mon 2/23

6:55 pm-1:10 pm

2 stops18h 15m

Liberia

Fri 2/27

2:20 pm-10:14 pm

1 stop7h 54m

$347

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Mon 2/2

7:10 am-1:50 pm

1 stop6h 40m

Liberia

Tue 2/10

2:45 pm-11:25 pm

1 stop8h 40m

$347

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Sun 2/8

6:00 am-12:50 pm

1 stop6h 50m

Liberia

Tue 2/10

2:45 pm-11:25 pm

1 stop8h 40m

$347

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Mon 2/9

7:10 am-1:50 pm

1 stop6h 40m

Liberia

Tue 2/10

2:45 pm-11:25 pm

1 stop8h 40m

$347

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 24 results

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.

Cheapflights Insights

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

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 $294). Flying from St. Louis to Costa Rica in June is currently the most expensive (average of $408). 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?

A simple way to save on the total cost of your ticket is to fly from St. Louis to Costa Rica in the evening. If you’re flexible enough to do this you can expect to save up to 25% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Costa Rica

Read through reviews of airlines operating flights from St. Louis to Costa Rica, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,253 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Southwest

8.0

Very good

4,253 reviews

Southwest

8.0

Very good

4,253 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Delta

7.9

Good

8,014 reviews

Southwest

8.0

Very good

4,253 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

United Airlines

7.4

Good

9,105 reviews

Southwest

8.0

Very good

4,253 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

American Airlines

7.2

Good

11,054 reviews

Southwest

8.0

Very good

4,253 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

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.
How long is the flight from St. Louis to Costa Rica?
Airlines like American Airlines, United Airlines, and Delta fly from St. Louis to Costa Rica in about 6h 40m. The time it takes to get you to your destination can typically vary by up to 5h 08m. The distance between St. Louis and Costa Rica is about 1967 mi. This flight may include one or multiple stops.
What are the cheapest airlines to fly from St. Louis to Costa Rica one-way?
The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $131. However, be on the lookout for offers from United Airlines and American 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 $294). Flying from St. Louis to Costa Rica in June is currently the most expensive (average of $408). 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

Alternative routes for St. Louis to Costa Rica

Top 4 airlines flying from St. Louis to Costa Rica

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$257	Average$512	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$319	Average$546	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$334	Average$560	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$383	Average$650	FlexibilityNo cancel fee	On-time63%

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$143+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from St. Louis to Costa Rica

Cheapest flights from St. Louis to Costa RicaExplore 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 23, 2025.

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 23, 2025.

Find flight deals from St. Louis to Costa Rica

Keep the following information in mind while searching for St. Louis to Costa Rica flight deals. Data was last updated December 23, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Costa Rica that are best for you.

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.

Cheapflights Insights

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

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

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 23, 2025.

Reviews of airlines servicing Costa Rica

Read through reviews of airlines operating flights from St. Louis to Costa Rica, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

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

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

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

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.

Top 4 airlines flying from St. Louis to Costa Rica

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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 23, 2025.