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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 1/14. 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

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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
8:45 am - 10:00 pm
SJO
-
STL
13h 15m1 stop
United Airlines Logo
6:00 am - 6:16 pm
STL
-
SJO
12h 16m1 stop
$357United Airlines
Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
6:30 am - 11:02 am
SJO
-
STL
28h 32m2 stops
United Airlines Logo
6:00 am - 6:16 pm
STL
-
SJO
12h 16m1 stop
$361United Airlines
Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
11:13 am - 9:47 pm
SJO
-
STL
33h 34m2 stops
United Airlines Logo
6:00 am - 7:37 pm
STL
-
SJO
14h 37m1 stop
$404United Airlines
Tue, Apr 7 - Fri, Apr 10
United Airlines Logo
7:55 am - 9:04 pm
SJO
-
STL
36h 09m2 stops
United Airlines Logo
6:00 pm - 10:11 am
STL
-
SJO
17h 11m1 stop
$420United Airlines
Sat, May 16 - Wed, Jun 17
United Airlines Logo
11:13 am - 10:19 pm
SJO
-
STL
10h 06m1 stop
United Airlines Logo
6:00 am - 12:21 pm
STL
-
SJO
7h 21m1 stop
$429United Airlines
Tue, Apr 7 - Fri, Apr 10
Delta Logo
7:00 am - 6:17 pm
SJO
-
STL
11h 17m1 stop
Delta Logo
7:00 am - 9:55 pm
STL
-
SJO
14h 55m1 stop
$438Delta
Fri, Dec 26 - Sat, Jan 3
United Airlines Logo
11:13 am - 9:03 pm
SJO
-
STL
32h 50m2 stops
United Airlines Logo
6:00 am - 7:37 pm
STL
-
SJO
14h 37m1 stop
$440United Airlines
Tue, Apr 7 - Fri, Apr 10
United Airlines Logo
6:30 am - 11:02 am
SJO
-
STL
28h 32m2 stops
United Airlines Logo
6:30 am - 8:39 pm
STL
-
SJO
14h 09m2 stops
$442United Airlines
Thu, Jan 29 - Mon, Feb 2
American Airlines Logo
11:59 pm - 8:55 am
SJO
-
STL
7h 56m1 stop
American Airlines Logo
12:09 pm - 10:05 pm
STL
-
SJO
10h 56m1 stop
$461American Airlines
Sat, May 16 - Wed, Jun 17
American Airlines Logo
7:10 am - 10:25 pm
SJO
-
STL
14h 15m2 stops
American Airlines Logo
6:28 am - 6:35 pm
STL
-
SJO
13h 07m2 stops
$466American Airlines
Sat, May 16 - Wed, Jun 17

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 29
SJO6:30 amSan José Juan Santamaria Intl
15h 30m
1 stop
STL10:00 pmLambert-St Louis
Feb 2
STL10:07 amLambert-St Louis
8h 09m
1 stop
SJO6:16 pmSan José Juan Santamaria Intl
$357
Find similar
United Airlines
Jan 29
SJO8:45 amSan José Juan Santamaria Intl
26h 17m
2 stops
STL11:02 amLambert-St Louis
Feb 2
STL6:00 amLambert-St Louis
7h 15m
1 stop
SJO1:15 pmSan José Juan Santamaria Intl
$361
Find similar
United Airlines
Apr 7
SJO11:13 amSan José Juan Santamaria Intl
33h 34m
2 stops
STL9:47 pmLambert-St Louis
Apr 10
STL6:00 amLambert-St Louis
14h 37m
1 stop
SJO7:37 pmSan José Juan Santamaria Intl
$404
Find similar

Delta flights from Costa Rica to St. Louis

Our best Delta deals on Costa Rica to St. Louis flight tickets
Delta
Dec 25
SJO7:00 amSan José Juan Santamaria Intl
9h 28m
1 stop
STL4:28 pmLambert-St Louis
Mar 24
STL1:00 pmLambert-St Louis
9h 15m
1 stop
SJO9:15 pmSan José Juan Santamaria Intl
$377
Find similar
Delta
Dec 26
SJO7:00 amSan José Juan Santamaria Intl
11h 17m
1 stop
STL6:17 pmLambert-St Louis
Jan 3
STL7:00 amLambert-St Louis
14h 55m
1 stop
SJO9:55 pmSan José Juan Santamaria Intl
$438
Find similar
Delta
Jan 7
SJO2:31 pmSan José Juan Santamaria Intl
9h 08m
1 stop
STL11:39 pmLambert-St Louis
Jan 24
STL1:00 pmLambert-St Louis
9h 15m
1 stop
SJO10:15 pmSan José Juan Santamaria Intl
$579
Find similar

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 December 16, 2025.
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

Thu 1/29

8:45 am-10:00 pm

1 stop13h 15m

Lambert-St Louis

Mon 2/2

6:00 am-6:16 pm

1 stop12h 16m

$357

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 1/29

6:30 am-11:02 am

2 stops28h 32m

Lambert-St Louis

Mon 2/2

6:00 am-6:16 pm

1 stop12h 16m

$361

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 4/7

11:13 am-9:47 pm

2 stops33h 34m

Lambert-St Louis

Fri 4/10

6:00 am-7:37 pm

1 stop14h 37m

$404

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 5/16

7:55 am-9:04 pm

2 stops36h 09m

Lambert-St Louis

Wed 6/17

6:00 pm-10:11 am

1 stop17h 11m

$420

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 4/7

11:13 am-10:19 pm

1 stop10h 06m

Lambert-St Louis

Fri 4/10

6:00 am-12:21 pm

1 stop7h 21m

$429

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 12/26

7:00 am-6:17 pm

1 stop11h 17m

Lambert-St Louis

Sat 1/3

7:00 am-9:55 pm

1 stop14h 55m

$438

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 4/7

11:13 am-9:03 pm

2 stops32h 50m

Lambert-St Louis

Fri 4/10

6:00 am-7:37 pm

1 stop14h 37m

$440

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 1/29

6:30 am-11:02 am

2 stops28h 32m

Lambert-St Louis

Mon 2/2

6:30 am-8:39 pm

2 stops14h 09m

$442

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 5/16

11:59 pm-8:55 am

1 stop7h 56m

Lambert-St Louis

Wed 6/17

12:09 pm-10:05 pm

1 stop10h 56m

$461

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 5/16

7:10 am-10:25 pm

2 stops14h 15m

Lambert-St Louis

Wed 6/17

6:28 am-6:35 pm

2 stops13h 07m

$466

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, 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 $362. The month of December is another great option to travel to St. Louis, with average flight prices from Costa Rica averaging around $365.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $420. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $690. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Costa Rica in the morning is the least expensive time of day to depart. momondo users have found prices as low as $479 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $561 per ticket.

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

9h 39m

Direct flights

None
The fastest flight from Costa Rica to St. Louis takes 9h 39m
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
11,049 reviews
Search American Airlines flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
9,092 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
Fenton
Wentzville
St. Peters
Collinsville
Alton
Clayton
Festus
Glencoe
Farmington
Eureka
Edwardsville
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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