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Cheap flights from Costa Rica to St. Louis from $176

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 1/27. 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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0 bags

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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.
United Airlines Logo
2:05 pm - 10:58 pm
SJO
-
STL
8h 53m1 stop
United Airlines Logo
6:00 am - 8:39 pm
STL
-
SJO
14h 39m1 stop
$313United Airlines
Fri, Jan 23 - Mon, Jan 26
United Airlines Logo
2:05 pm - 10:58 pm
SJO
-
STL
8h 53m1 stop
United Airlines Logo
9:57 am - 8:39 pm
STL
-
SJO
10h 42m2 stops
$318United Airlines
Fri, Jan 23 - Mon, Jan 26
United Airlines Logo
6:30 am - 12:29 pm
SJO
-
STL
29h 59m2 stops
United Airlines Logo
6:40 pm - 8:39 pm
STL
-
SJO
25h 59m2 stops
$345United Airlines
Fri, Jan 23 - Mon, Jan 26
United Airlines Logo
6:30 am - 12:29 pm
SJO
-
STL
29h 59m2 stops
United Airlines Logo
4:49 pm - 1:15 pm
STL
-
SJO
20h 26m2 stops
$350United Airlines
Fri, Jan 23 - Mon, Jan 26
United Airlines Logo
12:35 pm - 10:14 pm
SJO
-
STL
9h 39m1 stop
United Airlines Logo
6:00 am - 8:39 pm
STL
-
SJO
14h 39m1 stop
$358United Airlines
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
2:20 pm - 9:05 pm
SJO
-
STL
30h 45m2 stops
United Airlines Logo
6:55 pm - 1:15 pm
STL
-
SJO
18h 20m2 stops
$362United Airlines
Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
11:35 pm - 10:59 am
SJO
-
STL
10h 24m1 stop
American Airlines Logo
6:20 pm - 9:25 am
STL
-
SJO
16h 05m1 stop
$377American Airlines
Thu, Mar 12 - Sun, Mar 15
United Airlines Logo
12:35 pm - 12:21 pm
SJO
-
STL
23h 46m2 stops
United Airlines Logo
6:55 pm - 1:15 pm
STL
-
SJO
18h 20m2 stops
$414United Airlines
Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
7:00 am - 8:16 pm
SJO
-
STL
12h 16m2 stops
American Airlines Logo
6:20 pm - 9:25 am
STL
-
SJO
16h 05m1 stop
$434American Airlines
Thu, Mar 12 - Sun, Mar 15
United Airlines Logo
7:55 am - 10:28 pm
SJO
-
STL
13h 33m1 stop
United Airlines Logo
6:00 am - 12:21 pm
STL
-
SJO
7h 21m1 stop
$442United Airlines
Tue, Apr 7 - Fri, Apr 10

American Airlines flights from Costa Rica to St. Louis

Our best American Airlines deals on Costa Rica to St. Louis flight tickets
American Airlines
Jan 14
SJO6:00 amSan José Juan Santamaria Intl
12h 34m
2 stops
STL6:34 pmLambert-St Louis
Jan 21
STL10:17 amLambert-St Louis
12h 13m
2 stops
SJO10:30 pmSan José Juan Santamaria Intl
$360
American Airlines
Mar 12
SJO11:35 pmSan José Juan Santamaria Intl
10h 24m
1 stop
STL10:59 amLambert-St Louis
Mar 15
STL6:20 pmLambert-St Louis
16h 05m
1 stop
SJO9:25 amSan José Juan Santamaria Intl
$377
American Airlines
Apr 1
SJO1:16 pmSan José Juan Santamaria Intl
18h 19m
1 stop
STL8:35 amLambert-St Louis
Apr 5
STL6:20 pmLambert-St Louis
16h 05m
1 stop
SJO9:25 amSan José Juan Santamaria Intl
$421

United Airlines flights from Costa Rica to St. Louis

Our best United Airlines deals on Costa Rica to St. Louis flight tickets
United Airlines
Jan 23
SJO2:05 pmSan José Juan Santamaria Intl
8h 53m
1 stop
STL10:58 pmLambert-St Louis
Jan 26
STL6:00 amLambert-St Louis
14h 39m
1 stop
SJO8:39 pmSan José Juan Santamaria Intl
$313
United Airlines
Jan 23
SJO2:20 pmSan José Juan Santamaria Intl
22h 09m
2 stops
STL12:29 pmLambert-St Louis
Jan 26
STL9:57 amLambert-St Louis
10h 42m
2 stops
SJO8:39 pmSan José Juan Santamaria Intl
$318
United Airlines
Jan 23
SJO6:30 amSan José Juan Santamaria Intl
29h 59m
2 stops
STL12:29 pmLambert-St Louis
Jan 26
STL6:40 pmLambert-St Louis
25h 59m
2 stops
SJO8:39 pmSan José Juan Santamaria Intl
$345

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 January 8, 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

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 1/23

2:05 pm-10:58 pm

1 stop8h 53m

Lambert-St Louis

Mon 1/26

6:00 am-8:39 pm

1 stop14h 39m

$313

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 1/23

2:05 pm-10:58 pm

1 stop8h 53m

Lambert-St Louis

Mon 1/26

9:57 am-8:39 pm

2 stops10h 42m

$318

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 1/23

6:30 am-12:29 pm

2 stops29h 59m

Lambert-St Louis

Mon 1/26

6:40 pm-8:39 pm

2 stops25h 59m

$345

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 1/23

6:30 am-12:29 pm

2 stops29h 59m

Lambert-St Louis

Mon 1/26

4:49 pm-1:15 pm

2 stops20h 26m

$350

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

12:35 pm-10:14 pm

1 stop9h 39m

Lambert-St Louis

Mon 3/2

6:00 am-8:39 pm

1 stop14h 39m

$358

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

2:20 pm-9:05 pm

2 stops30h 45m

Lambert-St Louis

Mon 3/2

6:55 pm-1:15 pm

2 stops18h 20m

$362

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 3/12

11:35 pm-10:59 am

1 stop10h 24m

Lambert-St Louis

Sun 3/15

6:20 pm-9:25 am

1 stop16h 05m

$377

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

12:35 pm-12:21 pm

2 stops23h 46m

Lambert-St Louis

Mon 3/2

6:55 pm-1:15 pm

2 stops18h 20m

$414

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 3/12

7:00 am-8:16 pm

2 stops12h 16m

Lambert-St Louis

Sun 3/15

6:20 pm-9:25 am

1 stop16h 05m

$434

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 4/7

7:55 am-10:28 pm

1 stop13h 33m

Lambert-St Louis

Fri 4/10

6:00 am-12:21 pm

1 stop7h 21m

$442

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

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 53m

Direct flights

None
The fastest flight from Costa Rica to St. Louis takes 8h 53m
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
7.2
11,095 reviews
Search American Airlines flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
9,139 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
O'Fallon
Maryland Heights
Florissant
Fenton
Collinsville
St. Peters
Wentzville
Alton
Farmington
Clayton
Eureka
Festus
Edwardsville
Glencoe
Litchfield
Shrewsbury

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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