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Cheap flights from Costa Rica to St. Louis from $207

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Costa Rica to St. Louis departing on 6/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Costa Rica to St. Louis

Recent round-trip flight deals from Costa Rica to St. Louis

Enter your travel dates to find the best prices.
Frontier Logo
9:35 am - 11:57 pm
SJO
-
STL
13h 22m
1 stop
Frontier Logo
4:17 pm - 8:20 am
STL
-
SJO
17h 03m
1 stop
$370Frontier
Sun, Jun 7 - Fri, Jun 19
United Airlines Logo
12:30 am - 9:26 pm
SJO
-
STL
19h 56m
2 stops
United Airlines Logo
1:13 pm - 10:11 am
STL
-
SJO
21h 58m
2 stops
$385United Airlines
Thu, Jul 23 - Tue, Aug 4
American Airlines Logo
3:38 pm - 10:24 am
SJO
-
STL
17h 46m
1 stop
American Airlines Logo
7:23 pm - 2:37 pm
STL
-
SJO
20h 14m
1 stop
$402American Airlines
Wed, Jul 22 - Sat, Aug 1
American Airlines Logo
12:50 pm - 10:24 am
SJO
-
STL
20h 34m
1 stop
American Airlines Logo
7:06 am - 2:37 pm
STL
-
SJO
8h 31m
1 stop
$404American Airlines
Tue, Jul 21 - Wed, Jul 29
American Airlines Logo
7:00 am - 9:21 pm
SJO
-
STL
13h 21m
2 stops
American Airlines Logo
7:23 pm - 2:37 pm
STL
-
SJO
20h 14m
1 stop
$406American Airlines
Wed, Jul 22 - Sat, Aug 1
American Airlines Logo
7:00 am - 11:32 pm
SJO
-
STL
15h 32m
2 stops
American Airlines Logo
7:06 am - 2:37 pm
STL
-
SJO
8h 31m
1 stop
$409American Airlines
Tue, Jul 21 - Tue, Jul 28
United Airlines Logo
12:30 am - 10:07 am
SJO
-
STL
8h 37m
1 stop
United Airlines Logo
8:35 pm - 12:21 pm
STL
-
SJO
16h 46m
2 stops
$417United Airlines
Wed, Jul 29 - Thu, Aug 6
Multiple Airlines Logo
9:35 am - 11:57 pm
SJO
-
STL
13h 22m
1 stop
Multiple Airlines Logo
4:19 pm - 3:11 pm
STL
-
SJO
23h 52m
1 stop
$422Multiple Airlines
Thu, May 21 - Tue, Jun 2
Multiple Airlines Logo
9:35 am - 11:57 pm
SJO
-
STL
13h 22m
1 stop
Multiple Airlines Logo
4:19 pm - 11:45 am
STL
-
SJO
20h 26m
2 stops
$433Multiple Airlines
Thu, May 21 - Thu, Jun 4
Frontier Logo
9:35 am - 10:53 am
SJO
-
STL
24h 18m
1 stop
Frontier Logo
8:08 pm - 8:20 am
STL
-
SJO
37h 12m
2 stops
$434Frontier
Sun, Jun 7 - Fri, Jun 19

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American Airlines flights from Costa Rica to St. Louis

Our best American Airlines deals on Costa Rica to St. Louis flight tickets
American Airlines
Jul 22
SJO3:38 pmSan José Juan Santamaria Intl
17h 46m
1 stop
STL10:24 amLambert-St Louis
Aug 1
STL7:23 pmLambert-St Louis
20h 14m
1 stop
SJO2:37 pmSan José Juan Santamaria Intl
$402
American Airlines
Jul 21
SJO12:50 pmSan José Juan Santamaria Intl
20h 34m
1 stop
STL10:24 amLambert-St Louis
Jul 29
STL7:06 amLambert-St Louis
8h 31m
1 stop
SJO2:37 pmSan José Juan Santamaria Intl
$404
American Airlines
Jul 22
SJO7:00 amSan José Juan Santamaria Intl
13h 21m
2 stops
STL9:21 pmLambert-St Louis
Aug 1
STL7:23 pmLambert-St Louis
20h 14m
1 stop
SJO2:37 pmSan José Juan Santamaria Intl
$406

United Airlines flights from Costa Rica to St. Louis

Our best United Airlines deals on Costa Rica to St. Louis flight tickets
United Airlines
Jul 23
SJO12:30 amSan José Juan Santamaria Intl
12h 46m
1 stop
STL2:16 pmLambert-St Louis
Aug 4
STL5:33 pmLambert-St Louis
19h 48m
2 stops
SJO12:21 pmSan José Juan Santamaria Intl
$385
United Airlines
Jul 29
SJO12:30 amSan José Juan Santamaria Intl
8h 37m
1 stop
STL10:07 amLambert-St Louis
Aug 6
STL8:35 pmLambert-St Louis
16h 46m
2 stops
SJO12:21 pmSan José Juan Santamaria Intl
$417
United Airlines
May 23
SJO11:13 amSan José Juan Santamaria Intl
10h 32m
1 stop
STL10:45 pmLambert-St Louis
Jun 6
STL5:41 pmLambert-St Louis
17h 30m
2 stops
SJO10:11 amSan José Juan Santamaria Intl
$449

momondo 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, momondo users made 832,500 searches. Data last updated April 29, 2026.
Use the filters below to find and compare flights from Costa Rica to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sun 6/7

9:35 am-11:57 pm

1 stop13h 22m

Lambert-St Louis

Fri 6/19

4:17 pm-8:20 am

1 stop17h 03m

$370

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 7/23

12:30 am-9:26 pm

2 stops19h 56m

Lambert-St Louis

Tue 8/4

1:13 pm-10:11 am

2 stops21h 58m

$385

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 7/22

3:38 pm-10:24 am

1 stop17h 46m

Lambert-St Louis

Sat 8/1

7:23 pm-2:37 pm

1 stop20h 14m

$402

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 7/21

12:50 pm-10:24 am

1 stop20h 34m

Lambert-St Louis

Wed 7/29

7:06 am-2:37 pm

1 stop8h 31m

$404

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 7/22

7:00 am-9:21 pm

2 stops13h 21m

Lambert-St Louis

Sat 8/1

7:23 pm-2:37 pm

1 stop20h 14m

$406
Quickest round-trip

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 7/21

7:00 am-11:32 pm

2 stops15h 32m

Lambert-St Louis

Tue 7/28

7:06 am-2:37 pm

1 stop8h 31m

$409

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 7/29

12:30 am-10:07 am

1 stop8h 37m

Lambert-St Louis

Thu 8/6

8:35 pm-12:21 pm

2 stops16h 46m

$417

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 5/21

9:35 am-11:57 pm

1 stop13h 22m

Lambert-St Louis

Tue 6/2

4:19 pm-3:11 pm

1 stop23h 52m

$422

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 5/21

9:35 am-11:57 pm

1 stop13h 22m

Lambert-St Louis

Thu 6/4

4:19 pm-11:45 am

2 stops20h 26m

$433

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sun 6/7

9:35 am-10:53 am

1 stop24h 18m

Lambert-St Louis

Fri 6/19

8:08 pm-8:20 am

2 stops37h 12m

$434

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 St. Louis from

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

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 St. Louis?

In general, November is the cheapest month to fly from Costa Rica to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $186. The month of July is another great option to travel to St. Louis, with average flight prices from Costa Rica averaging around $192.

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

You could potentially save up to 28% on your flight if you consider stops on a Costa Rica to St. Louis flight.

Cheap Costa Rica to St. Louis flight deals and tips

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

Fastest flight time

8h 20m

Direct flights

None
The fastest flight from Costa Rica to St. Louis takes 8h 20m
There are no direct flights from Costa Rica to St. Louis. There are no popular flight routes from Costa Rica to St. Louis.
Search flight deals

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

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

    Prices for flights from Costa Rica to Lambert-St Louis Airport were last updated today.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Costa Rica to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Costa Rica to St. Louis

Compare and see reviews for airlines that fly from Costa Rica to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $274Free CancellationRating
7.1
11,678 reviews
Search American Airlines flights
United AirlinesPriceFrom $306Free CancellationRating
7.4
9,680 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Wentzville
Alton
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Costa Rica to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Costa Rica to St. Louis flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to St. Louis from Costa Rica. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Costa Rica to St. Louis 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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