Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Costa Rica to St. Louis from $234

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 4/8. 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.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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.
American Airlines Logo
2:08 pm - 8:54 am
SJO
-
STL
17h 46m
1 stop
American Airlines Logo
11:06 am - 7:07 pm
STL
-
SJO
9h 01m
1 stop
$343American Airlines
Thu, Apr 16 - Tue, Apr 21
United Airlines Logo
7:55 am - 10:45 am
SJO
-
STL
25h 50m
2 stops
United Airlines Logo
7:45 am - 10:11 am
STL
-
SJO
27h 26m
2 stops
$347United Airlines
Thu, Apr 16 - Tue, Apr 21
American Airlines Logo
11:35 pm - 10:59 pm
SJO
-
STL
22h 24m
1 stop
American Airlines Logo
8:54 am - 7:07 pm
STL
-
SJO
11h 13m
2 stops
$348American Airlines
Thu, Apr 16 - Tue, Apr 21
Delta Logo
7:00 am - 5:53 pm
SJO
-
STL
9h 53m
1 stop
Delta Logo
6:00 am - 11:55 am
STL
-
SJO
6h 55m
1 stop
$350Delta
Tue, Apr 7 - Fri, Apr 10
United Airlines Logo
7:55 am - 10:45 am
SJO
-
STL
25h 50m
2 stops
United Airlines Logo
7:45 am - 10:11 am
STL
-
SJO
27h 26m
2 stops
$363United Airlines
Fri, Apr 24 - Tue, Apr 28
American Airlines Logo
11:35 pm - 5:21 pm
SJO
-
STL
16h 46m
1 stop
American Airlines Logo
5:24 am - 11:07 am
STL
-
SJO
6h 43m
1 stop
$366American Airlines
Thu, Apr 16 - Tue, Apr 21
American Airlines Logo
6:30 am - 11:46 pm
SJO
-
STL
16h 16m
2 stops
American Airlines Logo
7:05 am - 7:07 pm
STL
-
SJO
13h 02m
2 stops
$369American Airlines
Tue, May 5 - Fri, May 15
American Airlines Logo
11:35 pm - 5:21 pm
SJO
-
STL
16h 46m
1 stop
American Airlines Logo
8:54 am - 7:07 pm
STL
-
SJO
11h 13m
2 stops
$370American Airlines
Thu, Apr 16 - Tue, Apr 21
Delta Logo
7:00 am - 11:58 pm
SJO
-
STL
15h 58m
1 stop
Delta Logo
6:00 am - 11:55 am
STL
-
SJO
6h 55m
1 stop
$371Delta
Tue, Apr 7 - Fri, Apr 10
Southwest Logo
1:10 pm - 10:20 pm
SJO
-
STL
8h 10m
1 stop
Southwest Logo
12:25 pm - 7:00 pm
STL
-
SJO
7h 35m
1 stop
$379Southwest
Tue, May 12 - Mon, May 18

American Airlines flights from Costa Rica to St. Louis

Our best American Airlines deals on Costa Rica to St. Louis flight tickets
American Airlines
Apr 16
SJO2:08 pmSan José Juan Santamaria Intl
17h 46m
1 stop
STL8:54 amLambert-St Louis
Apr 21
STL11:06 amLambert-St Louis
9h 01m
1 stop
SJO7:07 pmSan José Juan Santamaria Intl
$343
American Airlines
Apr 16
SJO11:35 pmSan José Juan Santamaria Intl
22h 24m
1 stop
STL10:59 pmLambert-St Louis
Apr 21
STL8:54 amLambert-St Louis
11h 13m
2 stops
SJO7:07 pmSan José Juan Santamaria Intl
$348
American Airlines
Apr 16
SJO11:35 pmSan José Juan Santamaria Intl
16h 46m
1 stop
STL5:21 pmLambert-St Louis
Apr 21
STL5:24 amLambert-St Louis
6h 43m
1 stop
SJO11:07 amSan José Juan Santamaria Intl
$366

United Airlines flights from Costa Rica to St. Louis

Our best United Airlines deals on Costa Rica to St. Louis flight tickets
United Airlines
Apr 16
SJO7:55 amSan José Juan Santamaria Intl
25h 50m
2 stops
STL10:45 amLambert-St Louis
Apr 21
STL7:45 amLambert-St Louis
27h 26m
2 stops
SJO10:11 amSan José Juan Santamaria Intl
$347
United Airlines
Apr 24
SJO7:55 amSan José Juan Santamaria Intl
25h 50m
2 stops
STL10:45 amLambert-St Louis
Apr 28
STL7:45 amLambert-St Louis
27h 26m
2 stops
SJO10:11 amSan José Juan Santamaria Intl
$363
United Airlines
Apr 7
SJO7:55 amSan José Juan Santamaria Intl
13h 33m
1 stop
STL10:28 pmLambert-St Louis
Apr 10
STL6:00 amLambert-St Louis
7h 21m
1 stop
SJO12:21 pmSan José Juan Santamaria Intl
$380

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 March 7, 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

Thu 4/16

2:08 pm-8:54 am

1 stop17h 46m

Lambert-St Louis

Tue 4/21

11:06 am-7:07 pm

1 stop9h 01m

$343

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 4/16

7:55 am-10:45 am

2 stops25h 50m

Lambert-St Louis

Tue 4/21

7:45 am-10:11 am

2 stops27h 26m

$347

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 4/16

11:35 pm-10:59 pm

1 stop22h 24m

Lambert-St Louis

Tue 4/21

8:54 am-7:07 pm

2 stops11h 13m

$348

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 4/7

7:00 am-5:53 pm

1 stop9h 53m

Lambert-St Louis

Fri 4/10

6:00 am-11:55 am

1 stop6h 55m

$350

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 4/24

7:55 am-10:45 am

2 stops25h 50m

Lambert-St Louis

Tue 4/28

7:45 am-10:11 am

2 stops27h 26m

$363

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 4/16

11:35 pm-5:21 pm

1 stop16h 46m

Lambert-St Louis

Tue 4/21

5:24 am-11:07 am

1 stop6h 43m

$366

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 5/5

6:30 am-11:46 pm

2 stops16h 16m

Lambert-St Louis

Fri 5/15

7:05 am-7:07 pm

2 stops13h 02m

$369

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 4/16

11:35 pm-5:21 pm

1 stop16h 46m

Lambert-St Louis

Tue 4/21

8:54 am-7:07 pm

2 stops11h 13m

$370

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 4/7

7:00 am-11:58 pm

1 stop15h 58m

Lambert-St Louis

Fri 4/10

6:00 am-11:55 am

1 stop6h 55m

$371
Quickest round-trip

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 5/12

1:10 pm-10:20 pm

1 stop8h 10m

Lambert-St Louis

Mon 5/18

12:25 pm-7:00 pm

1 stop7h 35m

$379

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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, October 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 $336. The month of September is another great option to travel to St. Louis, with average flight prices from Costa Rica averaging around $362.

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

You could potentially save up to 19% 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 10m

Direct flights

None
The fastest flight from Costa Rica to St. Louis takes 8h 10m
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

  • 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
11,398 reviews
Search American Airlines flights
United AirlinesPriceFrom $306Free CancellationRating
7.4
9,404 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
Florissant
Maryland Heights
O'Fallon
St. Peters
Wentzville
Collinsville
Alton
Fenton
Farmington
Edwardsville
Festus
Clayton
Eureka
Litchfield
Glencoe
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.

An easier way to manage your St. Louis 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 4/6
Mon 4/13
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States