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Cheap flights from Costa Rica to St. Louis from $180

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 1/10. 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.
Multiple Airlines Logo
12:33 pm - 10:34 pmSJO-STL
10h 01m1 stop
Multiple Airlines Logo
5:42 pm - 11:37 amSTL-SJO
17h 55m1 stop
$338Multiple Airlines
Find Deal
Wed, Jan 14 - Wed, Jan 21
United Airlines Logo
6:30 am - 2:30 pmSJO-STL
32h 00m2 stops
United Airlines Logo
8:05 am - 6:16 pmSTL-SJO
10h 11m2 stops
$348United Airlines
Find Deal
Wed, Jan 14 - Wed, Jan 21
Multiple Airlines Logo
12:33 pm - 11:33 pmSJO-STL
11h 00m1 stop
Multiple Airlines Logo
5:44 pm - 11:40 amSTL-SJO
17h 56m2 stops
$349Multiple Airlines
Find Deal
Thu, Feb 5 - Wed, Feb 11
Delta Logo
7:00 am - 2:49 pmSJO-STL
7h 49m1 stop
Delta Logo
9:59 am - 10:15 pmSTL-SJO
12h 16m1 stop
$357Delta
Find Deal
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
6:30 am - 5:43 pmSJO-STL
11h 13m2 stops
United Airlines Logo
6:30 am - 7:53 pmSTL-SJO
13h 23m2 stops
$361United Airlines
Find Deal
Thu, Jan 22 - Mon, Jan 26
American Airlines Logo
12:31 am - 5:05 pmSJO-STL
16h 34m1 stop
American Airlines Logo
6:00 am - 8:13 pmSTL-SJO
14h 13m1 stop
$362American Airlines
Find Deal
Wed, Feb 25 - Mon, Mar 2
American Airlines Logo
7:45 am - 9:41 pmSJO-STL
13h 56m2 stops
American Airlines Logo
6:00 am - 8:13 pmSTL-SJO
14h 13m1 stop
$366American Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
6:00 am - 11:59 pmSJO-STL
17h 59m1 stop
American Airlines Logo
11:55 am - 11:43 pmSTL-SJO
11h 48m1 stop
$384American Airlines
Find Deal
Thu, Feb 5 - Wed, Feb 11
American Airlines Logo
12:31 am - 12:46 pmSJO-STL
12h 15m2 stops
American Airlines Logo
6:00 am - 8:13 pmSTL-SJO
14h 13m1 stop
$386American Airlines
Find Deal
Wed, Feb 25 - Mon, Mar 2
Multiple Airlines Logo
3:10 pm - 2:48 pmSJO-STL
23h 38m1 stop
Multiple Airlines Logo
5:11 pm - 11:37 amSTL-SJO
18h 26m1 stop
$401Multiple Airlines
Find Deal
Wed, Jan 7 - Sat, Jan 10

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 14
SJO6:30 amSan José Juan Santamaria Intl
32h 00m
2 stops
STL2:30 pmLambert-St Louis
Jan 21
STL8:05 amLambert-St Louis
10h 11m
2 stops
SJO6:16 pmSan José Juan Santamaria Intl
$348
Find similar
United Airlines
Jan 22
SJO6:30 amSan José Juan Santamaria Intl
11h 13m
2 stops
STL5:43 pmLambert-St Louis
Jan 26
STL6:30 amLambert-St Louis
13h 23m
2 stops
SJO7:53 pmSan José Juan Santamaria Intl
$361
Find similar
United Airlines
Jan 22
SJO6:30 amSan José Juan Santamaria Intl
16h 28m
2 stops
STL10:58 pmLambert-St Louis
Jan 26
STL6:30 amLambert-St Louis
13h 23m
2 stops
SJO7:53 pmSan José Juan Santamaria Intl
$413
Find similar

Delta flights from Costa Rica to St. Louis

Our best Delta deals on Costa Rica to St. Louis flight tickets
Delta
Jan 22
SJO7:00 amSan José Juan Santamaria Intl
7h 49m
1 stop
STL2:49 pmLambert-St Louis
Jan 26
STL9:59 amLambert-St Louis
12h 16m
1 stop
SJO10:15 pmSan José Juan Santamaria Intl
$357
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
$409
Find similar
Delta
Dec 26
SJO7:00 amSan José Juan Santamaria Intl
14h 40m
1 stop
STL9:40 pmLambert-St Louis
Jan 3
STL7:00 amLambert-St Louis
14h 55m
1 stop
SJO9:55 pmSan José Juan Santamaria Intl
$500
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 November 30, 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

Wed 1/14

12:33 pm-10:34 pm

1 stop10h 01m

Lambert-St Louis

Wed 1/21

5:42 pm-11:37 am

1 stop17h 55m

$338

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 1/14

6:30 am-2:30 pm

2 stops32h 00m

Lambert-St Louis

Wed 1/21

8:05 am-6:16 pm

2 stops10h 11m

$348

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/5

12:33 pm-11:33 pm

1 stop11h 00m

Lambert-St Louis

Wed 2/11

5:44 pm-11:40 am

2 stops17h 56m

$349

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 1/22

7:00 am-2:49 pm

1 stop7h 49m

Lambert-St Louis

Mon 1/26

9:59 am-10:15 pm

1 stop12h 16m

$357

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 1/22

6:30 am-5:43 pm

2 stops11h 13m

Lambert-St Louis

Mon 1/26

6:30 am-7:53 pm

2 stops13h 23m

$361

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 2/25

12:31 am-5:05 pm

1 stop16h 34m

Lambert-St Louis

Mon 3/2

6:00 am-8:13 pm

1 stop14h 13m

$362

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

7:45 am-9:41 pm

2 stops13h 56m

Lambert-St Louis

Mon 3/2

6:00 am-8:13 pm

1 stop14h 13m

$366

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/5

6:00 am-11:59 pm

1 stop17h 59m

Lambert-St Louis

Wed 2/11

11:55 am-11:43 pm

1 stop11h 48m

$384

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 2/25

12:31 am-12:46 pm

2 stops12h 15m

Lambert-St Louis

Mon 3/2

6:00 am-8:13 pm

1 stop14h 13m

$386

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 1/7

3:10 pm-2:48 pm

1 stop23h 38m

Lambert-St Louis

Sat 1/10

5:11 pm-11:37 am

1 stop18h 26m

$401

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 $367.

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.

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

You could potentially save up to 7% 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 54m

Direct flights

None
The fastest flight from Costa Rica to St. Louis takes 8h 54m
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
11,039 reviews
Search American Airlines flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
9,056 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
Collinsville
St. Peters
Alton
Farmington
Clayton
Festus
Glencoe
Edwardsville
Eureka
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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