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Cheap flights from Costa Rica to St. Louis from $261

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 11/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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 - 10:30 pm
SJO
-
STL
13h 35m
1 stop
United Airlines Logo
6:15 am - 7:37 pm
STL
-
SJO
14h 22m
1 stop
$453United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
7:55 am - 12:13 pm
SJO
-
STL
27h 18m
2 stops
United Airlines Logo
1:29 pm - 11:38 am
STL
-
SJO
23h 09m
2 stops
$458United Airlines
Thu, Oct 1 - Mon, Oct 5
Southwest Logo
9:00 am - 9:00 pm
SJO
-
STL
11h 00m
2 stops
Southwest Logo
5:10 am - 12:20 pm
STL
-
SJO
7h 10m
1 stop
$469Southwest
Fri, Oct 30 - Thu, Nov 12
Frontier Logo
9:45 am - 11:59 pm
SJO
-
STL
13h 14m
1 stop
Frontier Logo
4:09 pm - 8:30 am
STL
-
SJO
17h 21m
1 stop
$475Frontier
Sat, Aug 1 - Fri, Aug 7
United Airlines Logo
7:55 am - 2:10 pm
SJO
-
STL
29h 15m
1 stop
United Airlines Logo
6:15 am - 7:39 pm
STL
-
SJO
14h 24m
1 stop
$476United Airlines
Sun, Oct 11 - Sun, Oct 25
American Airlines Logo
1:03 pm - 9:32 am
SJO
-
STL
19h 29m
2 stops
American Airlines Logo
6:53 am - 8:07 pm
STL
-
SJO
14h 14m
2 stops
$490American Airlines
Tue, Sep 1 - Thu, Sep 24
United Airlines Logo
7:55 am - 10:30 pm
SJO
-
STL
13h 35m
1 stop
United Airlines Logo
6:15 am - 7:37 pm
STL
-
SJO
14h 22m
1 stop
$508United Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
6:40 am - 8:39 am
SJO
-
STL
24h 59m
2 stops
United Airlines Logo
12:59 pm - 12:21 pm
STL
-
SJO
24h 22m
2 stops
$524United Airlines
Sat, Aug 1 - Tue, Aug 11
JetBlue Logo
11:28 pm - 12:40 pm
SJO
-
STL
13h 12m
1 stop
JetBlue Logo
6:00 am - 7:53 pm
STL
-
SJO
13h 53m
1 stop
$548JetBlue
Wed, Nov 25 - Mon, Nov 30
United Airlines Logo
12:44 pm - 11:44 pm
SJO
-
STL
10h 00m
1 stop
United Airlines Logo
7:05 pm - 12:21 pm
STL
-
SJO
18h 16m
2 stops
$555United Airlines
Sat, Aug 1 - Fri, Aug 7

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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 1
SJO7:55 amSan José Juan Santamaria Intl
13h 35m
1 stop
STL10:30 pmLambert-St Louis
Oct 5
STL6:15 amLambert-St Louis
14h 22m
1 stop
SJO7:37 pmSan José Juan Santamaria Intl
$453
United Airlines
Oct 1
SJO7:55 amSan José Juan Santamaria Intl
27h 18m
2 stops
STL12:13 pmLambert-St Louis
Oct 5
STL1:29 pmLambert-St Louis
23h 09m
2 stops
SJO11:38 amSan José Juan Santamaria Intl
$458
United Airlines
Oct 11
SJO7:55 amSan José Juan Santamaria Intl
29h 15m
1 stop
STL2:10 pmLambert-St Louis
Oct 25
STL6:15 amLambert-St Louis
14h 24m
1 stop
SJO7:39 pmSan José Juan Santamaria Intl
$476

Southwest flights from Costa Rica to St. Louis

Our best Southwest deals on Costa Rica to St. Louis flight tickets
Southwest
Oct 30
SJO9:00 amSan José Juan Santamaria Intl
11h 00m
2 stops
STL9:00 pmLambert-St Louis
Nov 12
STL5:10 amLambert-St Louis
7h 10m
1 stop
SJO12:20 pmSan José Juan Santamaria Intl
$469
Southwest
Sep 1
SJO9:00 amSan José Juan Santamaria Intl
9h 55m
1 stop
STL7:55 pmLambert-St Louis
Sep 24
STL10:55 amLambert-St Louis
8h 45m
1 stop
SJO6:40 pmSan José Juan Santamaria Intl
$588
Southwest
Aug 13
SJO9:00 amSan José Juan Santamaria Intl
12h 25m
1 stop
STL10:25 pmLambert-St Louis
Aug 18
STL6:25 amLambert-St Louis
7h 20m
1 stop
SJO12:45 pmSan José Juan Santamaria Intl
$620

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 July 12, 2026.
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

Cheapest round-trip

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 10/1

7:55 am-10:30 pm

1 stop13h 35m

Lambert-St Louis

Mon 10/5

6:15 am-7:37 pm

1 stop14h 22m

$453

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 10/1

7:55 am-12:13 pm

2 stops27h 18m

Lambert-St Louis

Mon 10/5

1:29 pm-11:38 am

2 stops23h 09m

$458
Quickest round-trip

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 10/30

9:00 am-9:00 pm

2 stops11h 00m

Lambert-St Louis

Thu 11/12

5:10 am-12:20 pm

1 stop7h 10m

$469

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 8/1

9:45 am-11:59 pm

1 stop13h 14m

Lambert-St Louis

Fri 8/7

4:09 pm-8:30 am

1 stop17h 21m

$475

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sun 10/11

7:55 am-2:10 pm

1 stop29h 15m

Lambert-St Louis

Sun 10/25

6:15 am-7:39 pm

1 stop14h 24m

$476

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 9/1

1:03 pm-9:32 am

2 stops19h 29m

Lambert-St Louis

Thu 9/24

6:53 am-8:07 pm

2 stops14h 14m

$490

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 10/17

7:55 am-10:30 pm

1 stop13h 35m

Lambert-St Louis

Sat 10/24

6:15 am-7:37 pm

1 stop14h 22m

$508

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 8/1

6:40 am-8:39 am

2 stops24h 59m

Lambert-St Louis

Tue 8/11

12:59 pm-12:21 pm

2 stops24h 22m

$524

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 11/25

11:28 pm-12:40 pm

1 stop13h 12m

Lambert-St Louis

Mon 11/30

6:00 am-7:53 pm

1 stop13h 53m

$548

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 8/1

12:44 pm-11:44 pm

1 stop10h 00m

Lambert-St Louis

Fri 8/7

7:05 pm-12:21 pm

2 stops18h 16m

$555

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 $0. The month of November is another great option to travel to St. Louis, with average flight prices from Costa Rica averaging around $186.

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

You could potentially save up to 39% 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

9h 25m

Direct flights

None
The fastest flight from Costa Rica to St. Louis takes 9h 25m
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

Frequently asked questions about flying from Costa Rica to St. Louis

  • 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
7.1
11,804 reviews
Search American Airlines flights
United AirlinesPriceFrom $400Free CancellationRating
7.4
9,979 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
Fairview Heights
Hermann
Collinsville
Florissant
St. Peters
Maryland Heights
O'Fallon
Alton
Farmington
Wentzville
Clayton
Fenton
Festus
Eureka
Edwardsville
Litchfield
Grafton
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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