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Cheap flights from Costa Rica to St. Louis from $266

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 10/17. 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
1 adult, Economy, 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.
American Airlines Logo
1:03 pm - 11:42 pm
SJO
-
STL
9h 39m
1 stop
American Airlines Logo
5:00 am - 8:07 pm
STL
-
SJO
16h 07m
1 stop
$515American Airlines
Tue, Sep 1 - Tue, Sep 29
American Airlines Logo
1:03 pm - 9:32 am
SJO
-
STL
19h 29m
2 stops
American Airlines Logo
6:30 am - 8:07 pm
STL
-
SJO
14h 37m
2 stops
$519American Airlines
Tue, Sep 1 - Tue, Sep 29
United Airlines Logo
1:25 pm - 12:02 pm
SJO
-
STL
21h 37m
2 stops
United Airlines Logo
7:01 pm - 12:21 pm
STL
-
SJO
18h 20m
2 stops
$543United Airlines
Wed, Sep 2 - Mon, Sep 28
Southwest Logo
12:35 pm - 11:00 pm
SJO
-
STL
9h 25m
1 stop
Southwest Logo
5:10 am - 12:20 pm
STL
-
SJO
7h 10m
1 stop
$546Southwest
Sun, Sep 27 - Sun, Nov 1
Southwest Logo
12:35 pm - 11:00 pm
SJO
-
STL
9h 25m
1 stop
Southwest Logo
9:35 pm - 1:15 pm
STL
-
SJO
15h 40m
2 stops
$551Southwest
Sun, Sep 27 - Sun, Nov 1
American Airlines Logo
1:31 pm - 8:35 am
SJO
-
STL
19h 04m
1 stop
American Airlines Logo
5:17 am - 2:29 pm
STL
-
SJO
9h 12m
1 stop
$556American Airlines
Thu, Dec 24 - Thu, Dec 31
American Airlines Logo
1:31 pm - 8:35 am
SJO
-
STL
19h 04m
1 stop
American Airlines Logo
5:17 am - 2:29 pm
STL
-
SJO
9h 12m
1 stop
$558American Airlines
Thu, Dec 24 - Thu, Dec 31
American Airlines Logo
12:34 am - 1:14 pm
SJO
-
STL
12h 40m
2 stops
American Airlines Logo
5:17 am - 10:45 pm
STL
-
SJO
17h 28m
1 stop
$560American Airlines
Wed, Dec 23 - Thu, Dec 31
American Airlines Logo
12:34 am - 1:14 pm
SJO
-
STL
12h 40m
2 stops
American Airlines Logo
5:17 am - 10:45 pm
STL
-
SJO
17h 28m
1 stop
$561American Airlines
Wed, Dec 23 - Thu, Dec 31
American Airlines Logo
1:31 pm - 8:35 am
SJO
-
STL
19h 04m
1 stop
American Airlines Logo
11:55 am - 11:43 pm
STL
-
SJO
11h 48m
1 stop
$562American Airlines
Sun, Dec 20 - Wed, Jan 20

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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
Sep 1
SJO1:03 pmSan José Juan Santamaria Intl
9h 39m
1 stop
STL11:42 pmLambert-St Louis
Sep 29
STL5:00 amLambert-St Louis
16h 07m
1 stop
SJO8:07 pmSan José Juan Santamaria Intl
$515
American Airlines
Sep 1
SJO1:03 pmSan José Juan Santamaria Intl
19h 29m
2 stops
STL9:32 amLambert-St Louis
Sep 29
STL6:30 amLambert-St Louis
14h 37m
2 stops
SJO8:07 pmSan José Juan Santamaria Intl
$519
American Airlines
Dec 24
SJO1:31 pmSan José Juan Santamaria Intl
19h 04m
1 stop
STL8:35 amLambert-St Louis
Dec 31
STL5:17 amLambert-St Louis
9h 12m
1 stop
SJO2:29 pmSan José Juan Santamaria Intl
$556

Delta flights from Costa Rica to St. Louis

Our best Delta deals on Costa Rica to St. Louis flight tickets
Delta
Sep 3
SJO1:14 pmSan José Juan Santamaria Intl
9h 44m
1 stop
STL11:58 pmLambert-St Louis
Sep 26
STL6:00 amLambert-St Louis
6h 54m
1 stop
SJO11:54 amSan José Juan Santamaria Intl
$575
Delta
Sep 1
SJO1:14 pmSan José Juan Santamaria Intl
9h 07m
1 stop
STL11:21 pmLambert-St Louis
Sep 29
STL6:00 amLambert-St Louis
6h 54m
1 stop
SJO11:54 amSan José Juan Santamaria Intl
$626
Delta
Sep 1
SJO1:14 pmSan José Juan Santamaria Intl
9h 07m
1 stop
STL11:21 pmLambert-St Louis
Sep 26
STL6:00 amLambert-St Louis
6h 54m
1 stop
SJO11:54 amSan José Juan Santamaria Intl
$657

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 July 24, 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

Tue 9/1

1:03 pm-11:42 pm

1 stop9h 39m

Lambert-St Louis

Tue 9/29

5:00 am-8:07 pm

1 stop16h 07m

$515

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 9/1

1:03 pm-9:32 am

2 stops19h 29m

Lambert-St Louis

Tue 9/29

6:30 am-8:07 pm

2 stops14h 37m

$519

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 9/2

1:25 pm-12:02 pm

2 stops21h 37m

Lambert-St Louis

Mon 9/28

7:01 pm-12:21 pm

2 stops18h 20m

$543
Quickest round-trip

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sun 9/27

12:35 pm-11:00 pm

1 stop9h 25m

Lambert-St Louis

Sun 11/1

5:10 am-12:20 pm

1 stop7h 10m

$546

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sun 9/27

12:35 pm-11:00 pm

1 stop9h 25m

Lambert-St Louis

Sun 11/1

9:35 pm-1:15 pm

2 stops15h 40m

$551

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 12/24

1:31 pm-8:35 am

1 stop19h 04m

Lambert-St Louis

Thu 12/31

5:17 am-2:29 pm

1 stop9h 12m

$556

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 12/24

1:31 pm-8:35 am

1 stop19h 04m

Lambert-St Louis

Thu 12/31

5:17 am-2:29 pm

1 stop9h 12m

$558

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 12/23

12:34 am-1:14 pm

2 stops12h 40m

Lambert-St Louis

Thu 12/31

5:17 am-10:45 pm

1 stop17h 28m

$560

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 12/23

12:34 am-1:14 pm

2 stops12h 40m

Lambert-St Louis

Thu 12/31

5:17 am-10:45 pm

1 stop17h 28m

$561

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sun 12/20

1:31 pm-8:35 am

1 stop19h 04m

Lambert-St Louis

Wed 1/20

11:55 am-11:43 pm

1 stop11h 48m

$562

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 $437. The month of November is another great option to travel to St. Louis, with average flight prices from Costa Rica averaging around $469.

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

You could potentially save up to 39% 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

7h 41m

Direct flights

None
The fastest flight from Costa Rica to St. Louis takes 7h 41m
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 $379Free CancellationRating
7.1
11,842 reviews
Search American Airlines flights
United AirlinesPriceFrom $400Free CancellationRating
7.4
10,026 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
Fairview Heights
Hermann
Collinsville
St. Peters
Florissant
Maryland Heights
O'Fallon
Alton
Farmington
Clayton
Wentzville
Fenton
Festus
Eureka
Edwardsville
Litchfield
Grafton
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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