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Cheap flights from Costa Rica to St. Louis from $270

This is the cheapest round-trip 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 10/25. 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

Spirit Airlines Logo
12:35 pm - 10:02 amSJO-STL
20h 27m1 stop
Spirit Airlines Logo
7:15 pm - 12:30 pmSTL-SJO
18h 15m1 stop
$270Spirit Airlines
Find Deal
Sat, Oct 25 - Sat, Nov 1
Spirit Airlines Logo
12:19 pm - 9:40 amSJO-STL
20h 21m1 stop
Spirit Airlines Logo
10:57 am - 11:30 amSTL-SJO
25h 33m1 stop
$280Spirit Airlines
Find Deal
Wed, Oct 1 - Thu, Oct 9
Logo
11:37 am - 1:02 pmSJO-STL
24h 25m1 stop
Logo
1:57 pm - 10:27 amSTL-SJO
21h 30m1 stop
$285
Find Deal
Thu, Sep 25 - Mon, Sep 29
Logo
12:19 pm - 9:54 amSJO-STL
20h 35m2 stops
Logo
10:57 am - 11:30 amSTL-SJO
25h 33m1 stop
$290
Find Deal
Wed, Oct 1 - Sun, Oct 5
United Airlines Logo
1:30 pm - 3:44 pmSJO-STL
25h 14m2 stops
United Airlines Logo
6:15 am - 7:39 pmSTL-SJO
14h 24m1 stop
$347United Airlines
Find Deal
Thu, Oct 23 - Tue, Oct 28
Southwest Logo
12:55 pm - 10:25 pmSJO-STL
8h 30m1 stop
Southwest Logo
5:30 am - 12:05 pmSTL-SJO
7h 35m1 stop
$356Southwest
Find Deal
Fri, Oct 17 - Tue, Oct 21
Southwest Logo
12:55 pm - 7:40 amSJO-STL
17h 45m2 stops
Southwest Logo
5:30 am - 12:05 pmSTL-SJO
7h 35m1 stop
$361Southwest
Find Deal
Fri, Oct 17 - Tue, Oct 21
American Airlines Logo
1:35 pm - 12:05 amSJO-STL
10h 30m1 stop
American Airlines Logo
5:00 am - 12:31 pmSTL-SJO
7h 31m1 stop
$364American Airlines
Find Deal
Thu, Nov 20 - Sun, Nov 30
American Airlines Logo
1:11 pm - 12:05 amSJO-STL
10h 54m2 stops
American Airlines Logo
5:00 am - 12:31 pmSTL-SJO
7h 31m1 stop
$369American Airlines
Find Deal
Thu, Nov 20 - Sun, Nov 30
United Airlines Logo
7:55 am - 6:57 pmSJO-STL
10h 02m1 stop
United Airlines Logo
8:25 am - 12:26 pmSTL-SJO
29h 01m1 stop
$377United Airlines
Find Deal
Thu, Oct 2 - Mon, Oct 6

Spirit Airlines flights from Costa Rica to St. Louis

Our best Spirit Airlines deals on Costa Rica to St. Louis flight tickets
Spirit Airlines
Oct 25
SJO12:35 pmSan José Juan Santamaria Intl
20h 27m
1 stop
STL10:02 amLambert-St Louis
Nov 1
STL7:15 pmLambert-St Louis
18h 15m
1 stop
SJO12:30 pmSan José Juan Santamaria Intl
$270
Find similar
Spirit Airlines
Oct 1
SJO12:19 pmSan José Juan Santamaria Intl
20h 21m
1 stop
STL9:40 amLambert-St Louis
Oct 9
STL10:57 amLambert-St Louis
25h 33m
1 stop
SJO11:30 amSan José Juan Santamaria Intl
$280
Find similar
Spirit Airlines
Oct 1
SJO12:19 pmSan José Juan Santamaria Intl
20h 21m
1 stop
STL9:40 amLambert-St Louis
Oct 5
STL10:57 amLambert-St Louis
25h 33m
1 stop
SJO11:30 amSan José Juan Santamaria Intl
$283
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
Oct 23
SJO1:30 pmSan José Juan Santamaria Intl
25h 14m
2 stops
STL3:44 pmLambert-St Louis
Oct 28
STL6:15 amLambert-St Louis
14h 24m
1 stop
SJO7:39 pmSan José Juan Santamaria Intl
$347
Find similar
United Airlines
Oct 2
SJO7:55 amSan José Juan Santamaria Intl
10h 02m
1 stop
STL6:57 pmLambert-St Louis
Oct 6
STL8:25 amLambert-St Louis
29h 01m
1 stop
SJO12:26 pmSan José Juan Santamaria Intl
$377
Find similar
United Airlines
Sep 29
SJO7:55 amSan José Juan Santamaria Intl
13h 05m
1 stop
STL10:00 pmLambert-St Louis
Oct 4
STL5:28 pmLambert-St Louis
19h 58m
2 stops
SJO12:26 pmSan José Juan Santamaria Intl
$398
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 September 15, 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

Sat 10/25

12:35 pm-10:02 am

1 stop20h 27m

Lambert-St Louis

Sat 11/1

7:15 pm-12:30 pm

1 stop18h 15m

$270

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 10/1

12:19 pm-9:40 am

1 stop20h 21m

Lambert-St Louis

Thu 10/9

10:57 am-11:30 am

1 stop25h 33m

$280

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 9/25

11:37 am-1:02 pm

1 stop24h 25m

Lambert-St Louis

Mon 9/29

1:57 pm-10:27 am

1 stop21h 30m

$285

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 10/1

12:19 pm-9:54 am

2 stops20h 35m

Lambert-St Louis

Sun 10/5

10:57 am-11:30 am

1 stop25h 33m

$290

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 10/23

1:30 pm-3:44 pm

2 stops25h 14m

Lambert-St Louis

Tue 10/28

6:15 am-7:39 pm

1 stop14h 24m

$347

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 10/17

12:55 pm-10:25 pm

1 stop8h 30m

Lambert-St Louis

Tue 10/21

5:30 am-12:05 pm

1 stop7h 35m

$356

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 10/17

12:55 pm-7:40 am

2 stops17h 45m

Lambert-St Louis

Tue 10/21

5:30 am-12:05 pm

1 stop7h 35m

$361

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 11/20

1:35 pm-12:05 am

1 stop10h 30m

Lambert-St Louis

Sun 11/30

5:00 am-12:31 pm

1 stop7h 31m

$364

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 11/20

1:11 pm-12:05 am

2 stops10h 54m

Lambert-St Louis

Sun 11/30

5:00 am-12:31 pm

1 stop7h 31m

$369

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 10/2

7:55 am-6:57 pm

1 stop10h 02m

Lambert-St Louis

Mon 10/6

8:25 am-12:26 pm

1 stop29h 01m

$377

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, August 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 $391. The month of September 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 10% 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
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
8,929 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
Fenton
Collinsville
Wentzville
Alton
St. Peters
Farmington
Festus
Glencoe
Clayton
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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