What airlines fly to Costa Rica?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Costa Rica from St. Louis according to our data. American Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Costa Rica. Keep in mind that there are 5 different airlines that fly to Costa Rica on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Lambert-St Louis to Costa Rica?

Southwest, United Airlines, and Delta are the most popular carriers operating from Lambert-St Louis to Costa Rica

When did momondo last update prices for flights from Lambert-St Louis Airport to Costa Rica?

Prices for flights from Lambert-St Louis Airport to Costa Rica are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Costa Rica?

As of September 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Costa Rica.

How old do you have to be to fly from Lambert-St Louis Airport to Costa Rica?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Costa Rica.

What documentation or ID do you need to fly to Costa Rica?

The travel and health documents required for your trip to Costa Rica can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Costa Rica. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$205 Cheap Flights from St. Louis to Costa Rica in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Costa Rica

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:05 pm - 2:10 pmSTL Lambert-St Louis-LIR Liberia

22h 05m1 stop Toronto Pearson Intl

3:10 pm - 3:26 pmLIR Liberia-STL Lambert-St Louis

24h 16m1 stop Toronto Pearson Intl

$436Air Canada

Wed, Dec 9 - Mon, Dec 14

4:05 pm - 2:20 pmSTL Lambert-St Louis-LIR Liberia

22h 15m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

3:10 pm - 3:26 pmLIR Liberia-STL Lambert-St Louis

24h 16m1 stop Toronto Pearson Intl

$439Air Canada

Wed, Dec 9 - Mon, Dec 14

5:25 am - 12:56 pmSTL Lambert-St Louis-LIR Liberia

7h 31m1 stop Chicago O'Hare Intl

2:20 pm - 10:13 pmLIR Liberia-STL Lambert-St Louis

7h 53m1 stop Houston George Bush Intcntl

$490United Airlines

Wed, Jan 6 - Wed, Jan 13

7:00 pm - 1:10 pmSTL Lambert-St Louis-LIR Liberia

18h 10m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

2:20 pm - 10:13 pmLIR Liberia-STL Lambert-St Louis

7h 53m1 stop Houston George Bush Intcntl

$490United Airlines

Wed, Jan 6 - Wed, Jan 13

6:00 am - 11:45 amSTL Lambert-St Louis-LIR Liberia

6h 45m1 stop Atlanta Hartsfield-Jackson

2:00 pm - 9:59 pmLIR Liberia-STL Lambert-St Louis

7h 59m1 stop Atlanta Hartsfield-Jackson

$490Delta

Sun, Oct 25 - Wed, Nov 4

6:00 am - 11:45 amSTL Lambert-St Louis-LIR Liberia

6h 45m1 stop Atlanta Hartsfield-Jackson

1:00 pm - 11:54 pmLIR Liberia-STL Lambert-St Louis

9h 54m1 stop Atlanta Hartsfield-Jackson

$490Delta

Sun, Oct 25 - Fri, Oct 30

7:01 am - 2:42 pmSTL Lambert-St Louis-LIR Liberia

7h 41m1 stop Dallas/Fort Worth

3:16 pm - 8:51 amLIR Liberia-STL Lambert-St Louis

17h 35m1 stop Dallas/Fort Worth

$495American Airlines

Wed, Jan 6 - Wed, Jan 13

8:15 pm - 2:17 pmSTL Lambert-St Louis-LIR Liberia

18h 02m2 stops Chicago O'Hare Intl Miami

3:17 pm - 10:53 amLIR Liberia-STL Lambert-St Louis

19h 36m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$495American Airlines

Sat, Nov 7 - Fri, Nov 13

6:05 am - 1:45 pmSTL Lambert-St Louis-SJO San José Juan Santamaria Intl

7h 40m1 stop Houston Hobby

2:45 pm - 7:55 amSJO San José Juan Santamaria Intl-STL Lambert-St Louis

17h 10m2 stops Houston Hobby Chicago Midway

$532Southwest

Tue, Jan 12 - Fri, Jan 15

6:05 am - 1:45 pmSTL Lambert-St Louis-SJO San José Juan Santamaria Intl

7h 40m1 stop Houston Hobby

1:50 pm - 7:40 amSJO San José Juan Santamaria Intl-STL Lambert-St Louis

17h 50m2 stops Orlando Baltimore/Washington

$582Southwest

Tue, Feb 9 - Tue, Feb 16

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GOL flights from St. Louis to Costa Rica

Our best GOL deals on St. Louis to Costa Rica flight tickets

GOL

Feb 9

STL5:18 pmLambert-St Louis

19h 19m

2 stops

SJO12:37 pmSan José Juan Santamaria Intl

Feb 16

SJO1:48 pmSan José Juan Santamaria Intl

20h 39m

2 stops

STL10:27 amLambert-St Louis

$623

GOL

Jan 23

STL5:49 pmLambert-St Louis

18h 41m

2 stops

SJO12:30 pmSan José Juan Santamaria Intl

Jan 31

SJO6:30 amSan José Juan Santamaria Intl

12h 00m

1 stop

STL6:30 pmLambert-St Louis

$637

American Airlines flights from St. Louis to Costa Rica

Our best American Airlines deals on St. Louis to Costa Rica flight tickets

American Airlines

Jan 6

STL7:01 amLambert-St Louis

7h 41m

1 stop

LIR2:42 pmLiberia

Jan 13

LIR3:16 pmLiberia

17h 35m

1 stop

STL8:51 amLambert-St Louis

$495

American Airlines

Nov 7

STL10:21 amLambert-St Louis

28h 14m

1 stop

LIR2:35 pmLiberia

Nov 13

LIR3:17 pmLiberia

18h 13m

1 stop

STL9:30 amLambert-St Louis

$499

American Airlines

Jan 6

STL7:01 amLambert-St Louis

7h 41m

1 stop

LIR2:42 pmLiberia

Jan 13

LIR1:39 pmLiberia

19h 12m

2 stops

STL8:51 amLambert-St Louis

$500

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Wed 12/9

4:05 pm-2:10 pm

1 stop22h 05m

Liberia

Mon 12/14

3:10 pm-3:26 pm

1 stop24h 16m

$436

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Wed 12/9

4:05 pm-2:20 pm

2 stops22h 15m

Liberia

Mon 12/14

3:10 pm-3:26 pm

1 stop24h 16m

$439

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Wed 1/6

5:25 am-12:56 pm

1 stop7h 31m

Liberia

Wed 1/13

2:20 pm-10:13 pm

1 stop7h 53m

$490

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Wed 1/6

7:00 pm-1:10 pm

2 stops18h 10m

Liberia

Wed 1/13

2:20 pm-10:13 pm

1 stop7h 53m

$490

Quickest round-trip

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Sun 10/25

6:00 am-11:45 am

1 stop6h 45m

Liberia

Wed 11/4

2:00 pm-9:59 pm

1 stop7h 59m

$490

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Sun 10/25

6:00 am-11:45 am

1 stop6h 45m

Liberia

Fri 10/30

1:00 pm-11:54 pm

1 stop9h 54m

$490

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Wed 1/6

7:01 am-2:42 pm

1 stop7h 41m

Liberia

Wed 1/13

3:16 pm-8:51 am

1 stop17h 35m

$495

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Sat 11/7

8:15 pm-2:17 pm

2 stops18h 02m

Liberia

Fri 11/13

3:17 pm-10:53 am

2 stops19h 36m

$495

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Tue 1/12

6:05 am-1:45 pm

1 stop7h 40m

San José Juan Santamaria Intl

Fri 1/15

2:45 pm-7:55 am

2 stops17h 10m

$532

St. LouisSan José

STL Lambert-St Louis - SJO San José Juan Santamaria Intl

STLSJO

Lambert-St Louis

Tue 2/9

6:05 am-1:45 pm

1 stop7h 40m

San José Juan Santamaria Intl

Tue 2/16

1:50 pm-7:40 am

2 stops17h 50m

$582

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Costa Rica

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Costa Rica?

The cheapest month to fly to Costa Rica from St. Louis is in February. Flight prices, which tend to average around $488, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in February, then November is your next best option. Flight prices from St. Louis to Costa Rica during November average around $502.

How far in advance should I book a flight from St. Louis to Costa Rica?

You are more likely to see cheaper flights to Costa Rica from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $618 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Costa Rica from St. Louis for as low as $453 on momondo.

Can stopping save me money on St. Louis to Costa Rica flights?

You could potentially save up to 25% on your flight if you consider stops on a St. Louis to Costa Rica flight.

Cheap St. Louis to Costa Rica flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Costa Rica

Best Price Found	$205
Fastest flight time	6h 25m
Direct flights	None

The best one-way flight to Costa Rica from St. Louis in the past 72 hours is $205. The best round-trip flight deal from St. Louis to Costa Rica found on momondo in the last 72 hours is $436.

The fastest flight from St. Louis to Costa Rica takes 6h 25m

There are no direct flights from St. Louis to Costa Rica. There are no popular flight routes from St. Louis to Costa Rica.

Search flight deals

Frequently asked questions about flying from St. Louis to Costa Rica

When did momondo last update prices for flights from Lambert-St Louis Airport to Costa Rica?
Prices for flights from Lambert-St Louis Airport to Costa Rica are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Costa Rica?
As of September 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Costa Rica.
How old do you have to be to fly from Lambert-St Louis Airport to Costa Rica?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Costa Rica.
What documentation or ID do you need to fly to Costa Rica?
The travel and health documents required for your trip to Costa Rica can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Costa Rica. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from St. Louis to Costa Rica

Compare and see reviews for airlines that fly from St. Louis to Costa Rica with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $359	Free Cancellation	Rating 7.8 8,594 reviews	Search Delta flights
American Airlines	PriceFrom $359	Free Cancellation	Rating 7.0 12,076 reviews	Search American Airlines flights
United Airlines	PriceFrom $389	Free Cancellation	Rating 7.4 10,230 reviews	Search United Airlines flights
Southwest	PriceFrom $403	Free Cancellation	Rating 8.0 4,196 reviews	Search Southwest flights
GOL	PriceFrom $628	Free Cancellation	Rating 7.3 1,309 reviews	Search GOL flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Costa Rica?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Costa Rica for you.

Can I find flights from St. Louis to Costa Rica with flexible booking policies on momondo?

Flights from St. Louis to Costa Rica with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Costa Rica?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Costa Rica.

I’m not ready to book a flight from St. Louis to Costa Rica right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Costa Rica flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Costa Rica trip

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Flights to San Joséfrom $309

Flights to Liberiafrom $276

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Cheap flights from St. Louis to Costa Rica from $205

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Costa Rica departing on 11/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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GOL flights from St. Louis to Costa Rica

Our best GOL deals on St. Louis to Costa Rica flight tickets

American Airlines flights from St. Louis to Costa Rica

Our best American Airlines deals on St. Louis to Costa Rica flight tickets

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See travel insights to Costa Rica from

How to get the cheapest flight ticket from St. Louis to Costa Rica

What is the cheapest month to fly to Costa Rica?

How far in advance should I book a flight from St. Louis to Costa Rica?

Can stopping save me money on St. Louis to Costa Rica flights?

What is the cheapest airline that flies from Lambert-St Louis to Costa Rica?

What airlines fly to Costa Rica?

Cheap St. Louis to Costa Rica flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from St. Louis to Costa Rica

Best airlines flying from St. Louis to Costa Rica

Compare and see reviews for airlines that fly from St. Louis to Costa Rica with momondo

Why use momondo?

An easier way to manage your Costa Rica trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Costa Rica

Popular cities in Costa Rica

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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Fly your favorite airline to Costa Rica

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List of cabin classes available on flights landing in Costa Rica. Availability may vary depending on flight origin and airline.

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According to popular flight searches on momondo this year