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Cheap flights from Costa Rica to St. Louis from $164

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 12/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
11:24 am - 11:57 pmSJO-STL
12h 33m1 stop
Multiple Airlines Logo
4:13 pm - 10:19 amSTL-SJO
18h 06m1 stop
$324Multiple Airlines
Find Deal
Mon, Nov 24 - Mon, Dec 1
Multiple Airlines Logo
12:43 pm - 7:50 amSJO-STL
19h 07m1 stop
Multiple Airlines Logo
5:11 pm - 11:47 amSTL-SJO
18h 36m1 stop
$332Multiple Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
1:20 pm - 1:52 pmSJO-STL
24h 32m1 stop
Multiple Airlines Logo
3:30 pm - 12:25 pmSTL-SJO
20h 55m2 stops
$335Multiple Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
United Airlines Logo
8:45 am - 10:43 pmSJO-STL
13h 58m2 stops
United Airlines Logo
6:00 am - 10:32 pmSTL-SJO
16h 32m1 stop
$348United Airlines
Find Deal
Thu, Dec 18 - Sun, Jan 4
American Airlines Logo
12:23 am - 5:05 pmSJO-STL
16h 42m1 stop
American Airlines Logo
5:05 am - 2:04 pmSTL-SJO
8h 59m1 stop
$357American Airlines
Find Deal
Wed, Feb 25 - Mon, Mar 2
American Airlines Logo
12:23 am - 5:05 pmSJO-STL
16h 42m1 stop
American Airlines Logo
7:00 am - 8:51 pmSTL-SJO
13h 51m2 stops
$361American Airlines
Find Deal
Wed, Feb 25 - Mon, Mar 2
United Airlines Logo
2:20 pm - 4:04 pmSJO-STL
25h 44m1 stop
United Airlines Logo
6:15 am - 1:15 pmSTL-SJO
7h 00m1 stop
$369United Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Delta Logo
7:00 am - 4:07 pmSJO-STL
9h 07m1 stop
Delta Logo
6:00 am - 10:07 pmSTL-SJO
16h 07m1 stop
$438Delta
Find Deal
Tue, Nov 25 - Mon, Dec 1
Southwest Logo
9:40 am - 9:30 pmSJO-STL
11h 50m2 stops
Southwest Logo
7:30 am - 7:30 pmSTL-SJO
12h 00m2 stops
$476Southwest
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Thu, Feb 26 - Mon, Mar 2
Delta Logo
2:21 pm - 9:40 pmSJO-STL
7h 19m1 stop
Delta Logo
7:00 am - 9:55 pmSTL-SJO
14h 55m1 stop
$488Delta
Find Deal
Fri, Dec 26 - Sat, Jan 3

American Airlines flights from Costa Rica to St. Louis

Our best American Airlines deals on Costa Rica to St. Louis flight tickets
American Airlines
Feb 25
SJO12:23 amSan José Juan Santamaria Intl
16h 42m
1 stop
STL5:05 pmLambert-St Louis
Mar 2
STL5:05 amLambert-St Louis
8h 59m
1 stop
SJO2:04 pmSan José Juan Santamaria Intl
$357
Find similar
American Airlines
Feb 25
SJO12:23 amSan José Juan Santamaria Intl
16h 42m
1 stop
STL5:05 pmLambert-St Louis
Mar 2
STL7:00 amLambert-St Louis
13h 51m
2 stops
SJO8:51 pmSan José Juan Santamaria Intl
$361
Find similar
American Airlines
Feb 25
SJO12:23 amSan José Juan Santamaria Intl
12h 23m
2 stops
STL12:46 pmLambert-St Louis
Mar 2
STL5:05 amLambert-St Louis
15h 46m
1 stop
SJO8:51 pmSan José Juan Santamaria Intl
$370
Find similar

United Airlines flights from Costa Rica to St. Louis

Our best United Airlines deals on Costa Rica to St. Louis flight tickets
United Airlines
Dec 18
SJO8:45 amSan José Juan Santamaria Intl
13h 58m
2 stops
STL10:43 pmLambert-St Louis
Jan 4
STL6:00 amLambert-St Louis
16h 32m
1 stop
SJO10:32 pmSan José Juan Santamaria Intl
$348
Find similar
United Airlines
Dec 4
SJO2:20 pmSan José Juan Santamaria Intl
25h 44m
1 stop
STL4:04 pmLambert-St Louis
Dec 11
STL6:15 amLambert-St Louis
7h 00m
1 stop
SJO1:15 pmSan José Juan Santamaria Intl
$369
Find similar
United Airlines
Dec 16
SJO2:20 pmSan José Juan Santamaria Intl
7h 38m
1 stop
STL9:58 pmLambert-St Louis
Jan 3
STL6:35 pmLambert-St Louis
23h 41m
2 stops
SJO6:16 pmSan José Juan Santamaria Intl
$441
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 6, 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

Mon 11/24

11:24 am-11:57 pm

1 stop12h 33m

Lambert-St Louis

Mon 12/1

4:13 pm-10:19 am

1 stop18h 06m

$324

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

12:43 pm-7:50 am

1 stop19h 07m

Lambert-St Louis

Mon 3/2

5:11 pm-11:47 am

1 stop18h 36m

$332

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 12/3

1:20 pm-1:52 pm

1 stop24h 32m

Lambert-St Louis

Wed 12/10

3:30 pm-12:25 pm

2 stops20h 55m

$335

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 12/18

8:45 am-10:43 pm

2 stops13h 58m

Lambert-St Louis

Sun 1/4

6:00 am-10:32 pm

1 stop16h 32m

$348

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 2/25

12:23 am-5:05 pm

1 stop16h 42m

Lambert-St Louis

Mon 3/2

5:05 am-2:04 pm

1 stop8h 59m

$357

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 2/25

12:23 am-5:05 pm

1 stop16h 42m

Lambert-St Louis

Mon 3/2

7:00 am-8:51 pm

2 stops13h 51m

$361

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 12/4

2:20 pm-4:04 pm

1 stop25h 44m

Lambert-St Louis

Thu 12/11

6:15 am-1:15 pm

1 stop7h 00m

$369

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 11/25

7:00 am-4:07 pm

1 stop9h 07m

Lambert-St Louis

Mon 12/1

6:00 am-10:07 pm

1 stop16h 07m

$438

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

9:40 am-9:30 pm

2 stops11h 50m

Lambert-St Louis

Mon 3/2

7:30 am-7:30 pm

2 stops12h 00m

$476

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 12/26

2:21 pm-9:40 pm

1 stop7h 19m

Lambert-St Louis

Sat 1/3

7:00 am-9:55 pm

1 stop14h 55m

$488

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, January 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 $365. The month of August is another great option to travel to St. Louis, with average flight prices from Costa Rica averaging around $391.

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 12% 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

Direct flights

None
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
11,040 reviews
Search American Airlines flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
9,007 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
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
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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