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Cheap flights from St. Louis to Costa Rica from $242

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Costa Rica

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:00 pm - 2:16 pmSTL  Lambert-St Louis-LIR Liberia
20h 16m2 stops Dallas/Fort Worth Miami
American Airlines Logo
3:42 pm - 10:12 amLIR  Liberia-STL Lambert-St Louis
18h 30m2 stops Miami Washington, D.C. Reagan-National
$437American Airlines
Wed, Jan 6 - Wed, Jan 13
American Airlines Logo
6:00 pm - 2:16 pmSTL  Lambert-St Louis-LIR Liberia
20h 16m2 stops Dallas/Fort Worth Miami
American Airlines Logo
1:24 pm - 9:49 pmLIR  Liberia-STL Lambert-St Louis
8h 25m1 stop Charlotte Douglas
$437American Airlines
Wed, Jan 6 - Wed, Jan 13
Air Canada Logo
4:05 pm - 2:10 pmSTL  Lambert-St Louis-LIR Liberia
22h 05m1 stop Toronto Pearson Intl
Air Canada Logo
3:10 pm - 3:26 pmLIR  Liberia-STL Lambert-St Louis
24h 16m1 stop Toronto Pearson Intl
$460Air Canada
Mon, Dec 7 - Mon, Dec 14
Air Canada Logo
4:05 pm - 2:10 pmSTL  Lambert-St Louis-LIR Liberia
22h 05m1 stop Toronto Pearson Intl
Air Canada Logo
3:10 pm - 3:26 pmLIR  Liberia-STL Lambert-St Louis
24h 16m1 stop Toronto Pearson Intl
$460Air Canada
Mon, Dec 7 - Thu, Dec 10
GOL Logo
8:22 pm - 2:00 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
17h 38m2 stops Chicago O'Hare Intl Dallas/Fort Worth
GOL Logo
1:18 pm - 11:57 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
10h 39m2 stops Miami Chicago O'Hare Intl
$501GOL
Sat, Jan 9 - Tue, Jan 26
United Airlines Logo
6:15 am - 1:22 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
7h 07m1 stop Houston George Bush Intcntl
United Airlines Logo
8:45 am - 8:38 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
11h 53m2 stops Houston George Bush Intcntl Denver Intl
$551United Airlines
Sun, Jan 17 - Thu, Jan 21
United Airlines Logo
9:20 am - 8:39 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
11h 19m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
United Airlines Logo
2:25 pm - 10:25 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
8h 00m1 stop Houston George Bush Intcntl
$619United Airlines
Wed, Feb 24 - Sun, Feb 28
Delta Logo
7:00 am - 9:49 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
14h 49m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 4:34 pmSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
9h 34m1 stop Atlanta Hartsfield-Jackson
$619Delta
Thu, Jan 7 - Wed, Jan 13
Delta Logo
5:41 pm - 11:20 amSTL  Lambert-St Louis-LIR Liberia
17h 39m1 stop Atlanta Hartsfield-Jackson
Delta Logo
3:25 pm - 11:26 pmLIR  Liberia-STL Lambert-St Louis
8h 01m1 stop Atlanta Hartsfield-Jackson
$638Delta
Fri, Jan 15 - Tue, Jan 19
GOL Logo
5:00 pm - 12:29 pmSTL  Lambert-St Louis-SJO San José Juan Santamaria Intl
19h 29m2 stops Charlotte Douglas Miami
GOL Logo
11:25 pm - 9:27 amSJO  San José Juan Santamaria Intl-STL Lambert-St Louis
9h 02m1 stop Dallas/Fort Worth
$680GOL
Mon, Mar 8 - Sun, Mar 14

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United Airlines flights from St. Louis to Costa Rica

Our best United Airlines deals on St. Louis to Costa Rica flight tickets
United Airlines
Jan 17
STL6:15 amLambert-St Louis
7h 07m
1 stop
SJO1:22 pmSan José Juan Santamaria Intl
Jan 21
SJO8:45 amSan José Juan Santamaria Intl
11h 53m
2 stops
STL8:38 pmLambert-St Louis
$551
United Airlines
Dec 2
STL11:00 amLambert-St Louis
8h 53m
1 stop
SJO7:53 pmSan José Juan Santamaria Intl
Dec 10
SJO11:28 pmSan José Juan Santamaria Intl
10h 22m
1 stop
STL9:50 amLambert-St Louis
$636
United Airlines
Dec 5
STL10:45 amLambert-St Louis
9h 54m
1 stop
SJO8:39 pmSan José Juan Santamaria Intl
Dec 15
SJO11:28 pmSan José Juan Santamaria Intl
10h 21m
1 stop
STL9:49 amLambert-St Louis
$640

Frontier flights from St. Louis to Costa Rica

Our best Frontier deals on St. Louis to Costa Rica flight tickets
Frontier
Jan 1
STL6:21 pmLambert-St Louis
19h 55m
1 stop
SJO2:16 pmSan José Juan Santamaria Intl
Jan 16
SJO2:07 pmSan José Juan Santamaria Intl
10h 04m
1 stop
STL12:11 amLambert-St Louis
$630
Frontier
Dec 31
STL5:58 pmLambert-St Louis
17h 07m
2 stops
SJO11:05 amSan José Juan Santamaria Intl
Jan 16
SJO2:07 pmSan José Juan Santamaria Intl
10h 04m
1 stop
STL12:11 amLambert-St Louis
$633
Frontier
Dec 31
STL5:58 pmLambert-St Louis
18h 43m
1 stop
SJO12:41 pmSan José Juan Santamaria Intl
Jan 16
SJO2:07 pmSan José Juan Santamaria Intl
10h 04m
1 stop
STL12:11 amLambert-St Louis
$657

momondo 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

Cheapest round-trip

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Wed 1/6

6:00 pm-2:16 pm

2 stops20h 16m

Liberia

Wed 1/13

3:42 pm-10:12 am

2 stops18h 30m

$437

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Wed 1/6

6:00 pm-2:16 pm

2 stops20h 16m

Liberia

Wed 1/13

1:24 pm-9:49 pm

1 stop8h 25m

$437

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Mon 12/7

4:05 pm-2:10 pm

1 stop22h 05m

Liberia

Mon 12/14

3:10 pm-3:26 pm

1 stop24h 16m

$460

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Mon 12/7

4:05 pm-2:10 pm

1 stop22h 05m

Liberia

Thu 12/10

3:10 pm-3:26 pm

1 stop24h 16m

$460

St. LouisSan José

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

STLSJO

Lambert-St Louis

Sat 1/9

8:22 pm-2:00 pm

2 stops17h 38m

San José Juan Santamaria Intl

Tue 1/26

1:18 pm-11:57 pm

2 stops10h 39m

$501
Quickest round-trip

St. LouisSan José

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

STLSJO

Lambert-St Louis

Sun 1/17

6:15 am-1:22 pm

1 stop7h 07m

San José Juan Santamaria Intl

Thu 1/21

8:45 am-8:38 pm

2 stops11h 53m

$551

St. LouisSan José

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

STLSJO

Lambert-St Louis

Wed 2/24

9:20 am-8:39 pm

2 stops11h 19m

San José Juan Santamaria Intl

Sun 2/28

2:25 pm-10:25 pm

1 stop8h 00m

$619

St. LouisSan José

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

STLSJO

Lambert-St Louis

Thu 1/7

7:00 am-9:49 pm

1 stop14h 49m

San José Juan Santamaria Intl

Wed 1/13

7:00 am-4:34 pm

1 stop9h 34m

$619

St. LouisLiberia

STL Lambert-St Louis - LIR Liberia

STLLIR

Lambert-St Louis

Fri 1/15

5:41 pm-11:20 am

1 stop17h 39m

Liberia

Tue 1/19

3:25 pm-11:26 pm

1 stop8h 01m

$638

St. LouisSan José

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

STLSJO

Lambert-St Louis

Mon 3/8

5:00 pm-12:29 pm

2 stops19h 29m

San José Juan Santamaria Intl

Sun 3/14

11:25 pm-9:27 am

1 stop9h 02m

$680

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Costa Rica from

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

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 $516, 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 May is your next best option. Flight prices from St. Louis to Costa Rica during May average around $526.

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 week ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $633 when searching week 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 $534 on momondo.

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

You could potentially save up to 39% 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

$242

Fastest flight time

6h 45m

Direct flights

None
The best one-way flight to Costa Rica from St. Louis in the past 72 hours is $242. The best round-trip flight deal from St. Louis to Costa Rica found on momondo in the last 72 hours is $437.
The fastest flight from St. Louis to Costa Rica takes 6h 45m
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?

  • 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
DeltaPriceFrom $359Free CancellationRating
7.8
8,712 reviews
Search Delta flights
United AirlinesPriceFrom $389Free CancellationRating
7.3
10,485 reviews
Search United Airlines flights
SouthwestPriceFrom $403Free CancellationRating
8.0
4,218 reviews
Search Southwest flights
American AirlinesPriceFrom $406Free CancellationRating
7.0
12,233 reviews
Search American Airlines flights
GOLPriceFrom $628Free CancellationRating
7.3
1,336 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.

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