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Cheap flights from Costa Rica to St. Louis from $155

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 12/24. 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.
United Airlines Logo
7:55 am - 2:27 pm
SJO
-
STL
29h 32m2 stops
United Airlines Logo
6:00 am - 7:37 pm
STL
-
SJO
14h 37m1 stop
$348United Airlines
vie., abr. 17 - dom., abr. 26
United Airlines Logo
6:30 am - 3:52 pm
SJO
-
STL
9h 22m1 stop
United Airlines Logo
10:07 am - 6:16 pm
STL
-
SJO
8h 09m1 stop
$357United Airlines
jue., ene. 29 - lun., feb. 2
United Airlines Logo
6:30 am - 12:29 pm
SJO
-
STL
29h 59m2 stops
United Airlines Logo
10:07 am - 8:39 pm
STL
-
SJO
10h 32m1 stop
$361United Airlines
jue., ene. 29 - lun., feb. 2
United Airlines Logo
6:30 am - 3:52 pm
SJO
-
STL
9h 22m1 stop
United Airlines Logo
9:57 am - 12:56 pm
STL
-
SJO
26h 59m1 stop
$369United Airlines
jue., ene. 22 - jue., ene. 29
United Airlines Logo
8:45 am - 10:43 pm
SJO
-
STL
13h 58m2 stops
United Airlines Logo
6:35 pm - 12:56 pm
STL
-
SJO
18h 21m1 stop
$377United Airlines
mié., dic. 24 - mié., dic. 31
American Airlines Logo
12:31 am - 5:05 pm
SJO
-
STL
16h 34m1 stop
American Airlines Logo
5:12 am - 9:43 pm
STL
-
SJO
17h 31m1 stop
$378American Airlines
dom., mar. 1 - mié., mar. 11
American Airlines Logo
8:00 am - 8:32 pm
SJO
-
STL
12h 32m2 stops
American Airlines Logo
9:54 am - 9:02 pm
STL
-
SJO
11h 08m2 stops
$382American Airlines
jue., ene. 22 - jue., ene. 29
United Airlines Logo
7:55 am - 12:25 pm
SJO
-
STL
27h 30m2 stops
United Airlines Logo
7:45 am - 12:21 pm
STL
-
SJO
29h 36m2 stops
$390United Airlines
vie., abr. 17 - dom., abr. 26
American Airlines Logo
12:34 am - 2:09 pm
SJO
-
STL
13h 35m2 stops
American Airlines Logo
9:45 am - 7:55 pm
STL
-
SJO
11h 10m2 stops
$391American Airlines
mié., dic. 24 - mar., mar. 24
United Airlines Logo
5:30 am - 10:06 pm
SJO
-
STL
15h 36m1 stop
United Airlines Logo
5:18 pm - 10:11 am
STL
-
SJO
17h 53m2 stops
$399United Airlines
vie., may. 22 - sáb., may. 30

United Airlines flights from Costa Rica to St. Louis

Our best United Airlines deals on Costa Rica to St. Louis flight tickets
United Airlines
Apr 17
SJO7:55 amSan José Juan Santamaria Intl
29h 32m
2 stops
STL2:27 pmLambert-St Louis
Apr 26
STL6:00 amLambert-St Louis
14h 37m
1 stop
SJO7:37 pmSan José Juan Santamaria Intl
$348
Find similar
United Airlines
Jan 29
SJO6:30 amSan José Juan Santamaria Intl
9h 22m
1 stop
STL3:52 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
SJO6:30 amSan José Juan Santamaria Intl
29h 59m
2 stops
STL12:29 pmLambert-St Louis
Feb 2
STL10:07 amLambert-St Louis
10h 32m
1 stop
SJO8:39 pmSan José Juan Santamaria Intl
$361
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
Mar 1
SJO12:31 amSan José Juan Santamaria Intl
16h 34m
1 stop
STL5:05 pmLambert-St Louis
Mar 11
STL5:12 amLambert-St Louis
17h 31m
1 stop
SJO9:43 pmSan José Juan Santamaria Intl
$378
Find similar
American Airlines
Jan 22
SJO8:00 amSan José Juan Santamaria Intl
12h 32m
2 stops
STL8:32 pmLambert-St Louis
Jan 29
STL9:54 amLambert-St Louis
11h 08m
2 stops
SJO9:02 pmSan José Juan Santamaria Intl
$382
Find similar
American Airlines
Dec 24
SJO12:34 amSan José Juan Santamaria Intl
13h 35m
2 stops
STL2:09 pmLambert-St Louis
Mar 24
STL9:45 amLambert-St Louis
11h 10m
2 stops
SJO7:55 pmSan José Juan Santamaria Intl
$391
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 diciembre 10, 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

vie. 4/17

7:55 am-2:27 pm

2 stops29h 32m

Lambert-St Louis

dom. 4/26

6:00 am-7:37 pm

1 stop14h 37m

$348

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

jue. 1/29

6:30 am-3:52 pm

1 stop9h 22m

Lambert-St Louis

lun. 2/2

10:07 am-6:16 pm

1 stop8h 09m

$357

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

jue. 1/29

6:30 am-12:29 pm

2 stops29h 59m

Lambert-St Louis

lun. 2/2

10:07 am-8:39 pm

1 stop10h 32m

$361

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

jue. 1/22

6:30 am-3:52 pm

1 stop9h 22m

Lambert-St Louis

jue. 1/29

9:57 am-12:56 pm

1 stop26h 59m

$369

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

mié. 12/24

8:45 am-10:43 pm

2 stops13h 58m

Lambert-St Louis

mié. 12/31

6:35 pm-12:56 pm

1 stop18h 21m

$377

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

dom. 3/1

12:31 am-5:05 pm

1 stop16h 34m

Lambert-St Louis

mié. 3/11

5:12 am-9:43 pm

1 stop17h 31m

$378

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

jue. 1/22

8:00 am-8:32 pm

2 stops12h 32m

Lambert-St Louis

jue. 1/29

9:54 am-9:02 pm

2 stops11h 08m

$382

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

vie. 4/17

7:55 am-12:25 pm

2 stops27h 30m

Lambert-St Louis

dom. 4/26

7:45 am-12:21 pm

2 stops29h 36m

$390

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

mié. 12/24

12:34 am-2:09 pm

2 stops13h 35m

Lambert-St Louis

mar. 3/24

9:45 am-7:55 pm

2 stops11h 10m

$391

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

vie. 5/22

5:30 am-10:06 pm

1 stop15h 36m

Lambert-St Louis

sáb. 5/30

5:18 pm-10:11 am

2 stops17h 53m

$399

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 53m

Direct flights

None
The fastest flight from Costa Rica to St. Louis takes 8h 53m
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
11,048 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
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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