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Cheap flights from Costa Rica to St. Louis from $195

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 1/23. 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
6:30 am - 10:00 pm
SJO
-
STL
15h 30m1 stop
United Airlines Logo
10:07 am - 8:39 pm
STL
-
SJO
10h 32m1 stop
$357United Airlines
Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
6:30 am - 12:29 pm
SJO
-
STL
29h 59m2 stops
United Airlines Logo
10:07 am - 6:16 pm
STL
-
SJO
8h 09m1 stop
$361United Airlines
Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
1:25 pm - 9:03 pm
SJO
-
STL
30h 38m2 stops
United Airlines Logo
6:00 am - 12:21 pm
STL
-
SJO
7h 21m1 stop
$369United Airlines
Fri, Apr 24 - Thu, Apr 30
Delta Logo
7:00 am - 4:28 pm
SJO
-
STL
9h 28m1 stop
Delta Logo
10:02 am - 9:15 pm
STL
-
SJO
12h 13m1 stop
$377Delta
Thu, Dec 25 - Tue, Mar 24
United Airlines Logo
8:45 am - 7:18 pm
SJO
-
STL
10h 33m2 stops
United Airlines Logo
5:00 am - 5:16 pm
STL
-
SJO
13h 16m2 stops
$391United Airlines
Thu, Dec 25 - Tue, Mar 24
United Airlines Logo
11:28 pm - 9:00 pm
SJO
-
STL
21h 32m2 stops
United Airlines Logo
4:49 pm - 1:15 pm
STL
-
SJO
20h 26m2 stops
$403United Airlines
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
5:30 am - 12:20 pm
SJO
-
STL
29h 50m2 stops
United Airlines Logo
6:15 am - 12:26 pm
STL
-
SJO
7h 11m1 stop
$420United Airlines
Fri, May 22 - Fri, May 29
United Airlines Logo
7:55 am - 10:19 pm
SJO
-
STL
13h 24m1 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 - 9:40 pm
SJO
-
STL
14h 40m1 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 - 9:47 pm
SJO
-
STL
33h 34m2 stops
United Airlines Logo
6:00 am - 12:21 pm
STL
-
SJO
7h 21m1 stop
$440United Airlines
Tue, Apr 7 - Fri, Apr 10

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
STL10:02 amLambert-St Louis
12h 13m
1 stop
SJO9:15 pmSan José Juan Santamaria Intl
$377
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
$438
Find similar

American Airlines flights from Costa Rica to St. Louis

Our best American Airlines deals on Costa Rica to St. Louis flight tickets
American Airlines
May 22
SJO11:59 pmSan José Juan Santamaria Intl
13h 36m
2 stops
STL2:35 pmLambert-St Louis
May 29
STL6:04 amLambert-St Louis
13h 31m
2 stops
SJO6:35 pmSan José Juan Santamaria Intl
$523
Find similar
American Airlines
Jan 7
SJO6:00 amSan José Juan Santamaria Intl
11h 22m
1 stop
STL5:22 pmLambert-St Louis
Jan 10
STL5:07 pmLambert-St Louis
19h 36m
1 stop
SJO12:43 pmSan José Juan Santamaria Intl
$672
Find similar
American Airlines
Jan 7
SJO6:00 amSan José Juan Santamaria Intl
11h 23m
2 stops
STL5:23 pmLambert-St Louis
Jan 10
STL5:07 pmLambert-St Louis
19h 36m
1 stop
SJO12:43 pmSan José Juan Santamaria Intl
$677
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 7, 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

6:30 am-10:00 pm

1 stop15h 30m

Lambert-St Louis

Mon 2/2

10:07 am-8:39 pm

1 stop10h 32m

$357

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 1/29

6:30 am-12:29 pm

2 stops29h 59m

Lambert-St Louis

Mon 2/2

10:07 am-6:16 pm

1 stop8h 09m

$361

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 4/24

1:25 pm-9:03 pm

2 stops30h 38m

Lambert-St Louis

Thu 4/30

6:00 am-12:21 pm

1 stop7h 21m

$369

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 12/25

7:00 am-4:28 pm

1 stop9h 28m

Lambert-St Louis

Tue 3/24

10:02 am-9:15 pm

1 stop12h 13m

$377

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 12/25

8:45 am-7:18 pm

2 stops10h 33m

Lambert-St Louis

Tue 3/24

5:00 am-5:16 pm

2 stops13h 16m

$391

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

11:28 pm-9:00 pm

2 stops21h 32m

Lambert-St Louis

Mon 3/2

4:49 pm-1:15 pm

2 stops20h 26m

$403

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 5/22

5:30 am-12:20 pm

2 stops29h 50m

Lambert-St Louis

Fri 5/29

6:15 am-12:26 pm

1 stop7h 11m

$420

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 4/7

7:55 am-10:19 pm

1 stop13h 24m

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-9:40 pm

1 stop14h 40m

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-9:47 pm

2 stops33h 34m

Lambert-St Louis

Fri 4/10

6:00 am-12:21 pm

1 stop7h 21m

$440

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.

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

You could potentially save up to 23% 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
11,042 reviews
Search American Airlines flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
9,076 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
Farmington
Festus
Clayton
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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