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Cheap flights from Costa Rica to St. Louis from $305

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 7/29. 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.
Frontier Logo
9:35 am - 11:59 pm
SJO
-
STL
13h 24m
1 stop
Frontier Logo
4:09 pm - 8:20 am
STL
-
SJO
17h 11m
1 stop
$528Frontier
Thu, Jul 23 - Sat, Aug 1
United Airlines Logo
12:44 pm - 9:09 pm
SJO
-
STL
31h 25m
1 stop
United Airlines Logo
3:12 pm - 7:37 pm
STL
-
SJO
29h 25m
1 stop
$550United Airlines
Thu, Oct 8 - Wed, Oct 14
United Airlines Logo
12:30 am - 5:42 pm
SJO
-
STL
16h 12m
1 stop
United Airlines Logo
6:14 am - 10:39 pm
STL
-
SJO
17h 25m
1 stop
$559United Airlines
Wed, Jul 22 - Tue, Jul 28
United Airlines Logo
12:30 am - 9:26 pm
SJO
-
STL
19h 56m
2 stops
United Airlines Logo
10:20 am - 10:11 am
STL
-
SJO
24h 51m
2 stops
$563United Airlines
Thu, Jul 23 - Tue, Jul 28
Avianca Logo
7:55 am - 11:29 pm
SJO
-
STL
14h 34m
2 stops
Avianca Logo
7:05 pm - 10:39 pm
STL
-
SJO
28h 34m
2 stops
$567Avianca
Wed, Jul 15 - Tue, Jul 21
American Airlines Logo
11:41 pm - 8:46 am
SJO
-
STL
8h 05m
1 stop
American Airlines Logo
5:13 pm - 2:37 pm
STL
-
SJO
22h 24m
1 stop
$568American Airlines
Thu, Jul 23 - Tue, Jul 28
United Airlines Logo
12:30 am - 11:29 pm
SJO
-
STL
21h 59m
2 stops
United Airlines Logo
5:59 pm - 10:11 am
STL
-
SJO
17h 12m
2 stops
$571United Airlines
Wed, Jul 22 - Sat, Aug 1
United Airlines Logo
12:44 pm - 3:43 pm
SJO
-
STL
25h 59m
2 stops
United Airlines Logo
6:15 am - 12:21 pm
STL
-
SJO
7h 06m
1 stop
$573United Airlines
Tue, Sep 29 - Sat, Oct 3
American Airlines Logo
2:56 pm - 9:32 am
SJO
-
STL
17h 36m
2 stops
American Airlines Logo
10:44 am - 7:53 pm
STL
-
SJO
10h 09m
2 stops
$574American Airlines
Fri, Aug 21 - Mon, Aug 24
United Airlines Logo
12:44 pm - 2:11 pm
SJO
-
STL
24h 27m
2 stops
United Airlines Logo
11:35 am - 12:21 pm
STL
-
SJO
25h 46m
2 stops
$578United Airlines
Tue, Sep 29 - Sat, Oct 3

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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 8
SJO7:55 amSan José Juan Santamaria Intl
13h 35m
1 stop
STL10:30 pmLambert-St Louis
Oct 13
STL6:15 amLambert-St Louis
7h 06m
1 stop
SJO12:21 pmSan José Juan Santamaria Intl
$550
United Airlines
Jul 22
SJO12:30 amSan José Juan Santamaria Intl
16h 12m
1 stop
STL5:42 pmLambert-St Louis
Jul 28
STL6:14 amLambert-St Louis
17h 25m
1 stop
SJO10:39 pmSan José Juan Santamaria Intl
$559
United Airlines
Jul 23
SJO12:30 amSan José Juan Santamaria Intl
19h 56m
2 stops
STL9:26 pmLambert-St Louis
Jul 28
STL10:20 amLambert-St Louis
24h 51m
2 stops
SJO10:11 amSan José Juan Santamaria Intl
$563

Southwest flights from Costa Rica to St. Louis

Our best Southwest deals on Costa Rica to St. Louis flight tickets
Southwest
Aug 14
SJO1:40 pmSan José Juan Santamaria Intl
7h 10m
1 stop
STL9:50 pmLambert-St Louis
Aug 17
STL5:10 amLambert-St Louis
8h 35m
1 stop
SJO12:45 pmSan José Juan Santamaria Intl
$609
Southwest
Aug 14
SJO1:40 pmSan José Juan Santamaria Intl
7h 10m
1 stop
STL9:50 pmLambert-St Louis
Aug 17
STL10:05 amLambert-St Louis
9h 35m
2 stops
SJO6:40 pmSan José Juan Santamaria Intl
$614
Southwest
Jul 19
SJO8:45 amSan José Juan Santamaria Intl
13h 30m
2 stops
STL11:15 pmLambert-St Louis
Jul 23
STL1:50 pmLambert-St Louis
6h 50m
1 stop
SJO7:40 pmSan José Juan Santamaria Intl
$635

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 June 8, 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 7/23

9:35 am-11:59 pm

1 stop13h 24m

Lambert-St Louis

Sat 8/1

4:09 pm-8:20 am

1 stop17h 11m

$528

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 10/8

12:44 pm-9:09 pm

1 stop31h 25m

Lambert-St Louis

Wed 10/14

3:12 pm-7:37 pm

1 stop29h 25m

$550

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 7/22

12:30 am-5:42 pm

1 stop16h 12m

Lambert-St Louis

Tue 7/28

6:14 am-10:39 pm

1 stop17h 25m

$559

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 7/23

12:30 am-9:26 pm

2 stops19h 56m

Lambert-St Louis

Tue 7/28

10:20 am-10:11 am

2 stops24h 51m

$563

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 7/15

7:55 am-11:29 pm

2 stops14h 34m

Lambert-St Louis

Tue 7/21

7:05 pm-10:39 pm

2 stops28h 34m

$567

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 7/23

11:41 pm-8:46 am

1 stop8h 05m

Lambert-St Louis

Tue 7/28

5:13 pm-2:37 pm

1 stop22h 24m

$568

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 7/22

12:30 am-11:29 pm

2 stops21h 59m

Lambert-St Louis

Sat 8/1

5:59 pm-10:11 am

2 stops17h 12m

$571

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 9/29

12:44 pm-3:43 pm

2 stops25h 59m

Lambert-St Louis

Sat 10/3

6:15 am-12:21 pm

1 stop7h 06m

$573
Quickest round-trip

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 8/21

2:56 pm-9:32 am

2 stops17h 36m

Lambert-St Louis

Mon 8/24

10:44 am-7:53 pm

2 stops10h 09m

$574

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 9/29

12:44 pm-2:11 pm

2 stops24h 27m

Lambert-St Louis

Sat 10/3

11:35 am-12:21 pm

2 stops25h 46m

$578

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 44% 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 27m

Direct flights

None
The fastest flight from Costa Rica to St. Louis takes 8h 27m
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
11,640 reviews
Search American Airlines flights
United AirlinesPriceFrom $306Free CancellationRating
7.4
9,781 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
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Fenton
Alton
Wentzville
Farmington
Festus
Eureka
Clayton
Litchfield
Edwardsville
Shrewsbury
Grafton

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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