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Cheap flights from Costa Rica to St. Louis from $176

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.
Multiple Airlines Logo
1:30 pm - 10:27 pm
SJO
-
STL
32h 57m2 stops
Multiple Airlines Logo
3:49 pm - 11:40 am
STL
-
SJO
19h 51m1 stop
$309Multiple Airlines
Mon, Feb 9 - Mon, Feb 16
United Airlines Logo
6:30 am - 10:00 pm
SJO
-
STL
15h 30m1 stop
United Airlines Logo
6:00 am - 1:15 pm
STL
-
SJO
7h 15m1 stop
$312United Airlines
Fri, Jan 23 - Mon, Jan 26
United Airlines Logo
6:30 am - 12:29 pm
SJO
-
STL
29h 59m2 stops
United Airlines Logo
6:40 pm - 6:16 pm
STL
-
SJO
23h 36m2 stops
$317United Airlines
Fri, Jan 23 - Mon, Jan 26
United Airlines Logo
6:30 am - 2:30 pm
SJO
-
STL
32h 00m2 stops
United Airlines Logo
6:55 pm - 1:15 pm
STL
-
SJO
18h 20m2 stops
$335United Airlines
Mon, Feb 9 - Mon, Feb 16
American Airlines Logo
11:25 am - 10:05 pm
SJO
-
STL
10h 40m1 stop
American Airlines Logo
5:14 am - 2:53 pm
STL
-
SJO
9h 39m1 stop
$357American Airlines
Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
11:25 am - 11:28 pm
SJO
-
STL
12h 03m2 stops
American Airlines Logo
5:14 am - 2:53 pm
STL
-
SJO
9h 39m1 stop
$361American Airlines
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
11:13 am - 10:28 pm
SJO
-
STL
10h 15m1 stop
United Airlines Logo
6:00 am - 7:37 pm
STL
-
SJO
14h 37m1 stop
$389United Airlines
Tue, Apr 7 - Fri, Apr 10
United Airlines Logo
11:13 am - 9:57 pm
SJO
-
STL
33h 44m2 stops
United Airlines Logo
6:00 am - 12:21 pm
STL
-
SJO
7h 21m1 stop
$400United Airlines
Tue, Apr 7 - Fri, Apr 10
United Airlines Logo
11:28 pm - 9:05 pm
SJO
-
STL
21h 37m2 stops
United Airlines Logo
6:55 pm - 1:15 pm
STL
-
SJO
18h 20m2 stops
$413United Airlines
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
11:13 am - 9:08 pm
SJO
-
STL
32h 55m2 stops
United Airlines Logo
7:45 am - 10:11 am
STL
-
SJO
27h 26m2 stops
$437United Airlines
Tue, Apr 7 - Fri, Apr 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 23
SJO6:30 amSan José Juan Santamaria Intl
15h 30m
1 stop
STL10:00 pmLambert-St Louis
Jan 26
STL6:00 amLambert-St Louis
7h 15m
1 stop
SJO1:15 pmSan José Juan Santamaria Intl
$312
Find similar
United Airlines
Jan 23
SJO6:30 amSan José Juan Santamaria Intl
15h 30m
1 stop
STL10:00 pmLambert-St Louis
Jan 26
STL4:49 pmLambert-St Louis
20h 26m
2 stops
SJO1:15 pmSan José Juan Santamaria Intl
$317
Find similar
United Airlines
Jan 21
SJO2:20 pmSan José Juan Santamaria Intl
24h 10m
2 stops
STL2:30 pmLambert-St Louis
Jan 25
STL3:11 pmLambert-St Louis
22h 04m
2 stops
SJO1:15 pmSan José Juan Santamaria Intl
$326
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
Jan 21
SJO6:00 amSan José Juan Santamaria Intl
15h 15m
2 stops
STL9:15 pmLambert-St Louis
Jan 25
STL6:00 amLambert-St Louis
16h 30m
1 stop
SJO10:30 pmSan José Juan Santamaria Intl
$321
Find similar
American Airlines
Jan 21
SJO7:09 amSan José Juan Santamaria Intl
11h 05m
1 stop
STL6:14 pmLambert-St Louis
Jan 25
STL6:00 amLambert-St Louis
16h 30m
1 stop
SJO10:30 pmSan José Juan Santamaria Intl
$322
Find similar
American Airlines
Feb 18
SJO12:31 amSan José Juan Santamaria Intl
16h 34m
1 stop
STL5:05 pmLambert-St Louis
Feb 26
STL6:07 pmLambert-St Louis
16h 18m
1 stop
SJO10:25 amSan José Juan Santamaria Intl
$344
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 26, 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 2/9

1:30 pm-10:27 pm

2 stops32h 57m

Lambert-St Louis

Mon 2/16

3:49 pm-11:40 am

1 stop19h 51m

$309

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 1/23

6:30 am-10:00 pm

1 stop15h 30m

Lambert-St Louis

Mon 1/26

6:00 am-1:15 pm

1 stop7h 15m

$312

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 1/23

6:30 am-12:29 pm

2 stops29h 59m

Lambert-St Louis

Mon 1/26

6:40 pm-6:16 pm

2 stops23h 36m

$317

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Mon 2/9

6:30 am-2:30 pm

2 stops32h 00m

Lambert-St Louis

Mon 2/16

6:55 pm-1:15 pm

2 stops18h 20m

$335

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

11:25 am-10:05 pm

1 stop10h 40m

Lambert-St Louis

Mon 3/2

5:14 am-2:53 pm

1 stop9h 39m

$357

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

11:25 am-11:28 pm

2 stops12h 03m

Lambert-St Louis

Mon 3/2

5:14 am-2:53 pm

1 stop9h 39m

$361

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 4/7

11:13 am-10:28 pm

1 stop10h 15m

Lambert-St Louis

Fri 4/10

6:00 am-7:37 pm

1 stop14h 37m

$389

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 4/7

11:13 am-9:57 pm

2 stops33h 44m

Lambert-St Louis

Fri 4/10

6:00 am-12:21 pm

1 stop7h 21m

$400

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

11:28 pm-9:05 pm

2 stops21h 37m

Lambert-St Louis

Mon 3/2

6:55 pm-1:15 pm

2 stops18h 20m

$413

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 4/7

11:13 am-9:08 pm

2 stops32h 55m

Lambert-St Louis

Fri 4/10

7:45 am-10:11 am

2 stops27h 26m

$437

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
11,068 reviews
Search American Airlines flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
9,116 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
St. Peters
Wentzville
Collinsville
Alton
Farmington
Clayton
Festus
Glencoe
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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