Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Costa Rica to St. Louis from $166

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 10/29. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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.
American Airlines Logo
8:05 am - 9:40 pmSJO-STL
13h 35m1 stop
American Airlines Logo
5:19 am - 2:05 pmSTL-SJO
8h 46m1 stop
$357American Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
1:50 pm - 10:29 amSJO-STL
20h 39m1 stop
American Airlines Logo
5:24 am - 2:15 pmSTL-SJO
8h 51m1 stop
$364American Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
1:50 pm - 9:40 pmSJO-STL
7h 50m1 stop
American Airlines Logo
11:18 am - 9:35 pmSTL-SJO
10h 17m2 stops
$369American Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
2:05 pm - 10:59 pmSJO-STL
8h 54m1 stop
United Airlines Logo
7:41 am - 1:15 pmSTL-SJO
29h 34m2 stops
$413United Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
2:20 pm - 9:00 pmSJO-STL
30h 40m2 stops
United Airlines Logo
7:41 am - 1:15 pmSTL-SJO
29h 34m2 stops
$455United Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 2
Southwest Logo
9:40 am - 9:30 pmSJO-STL
11h 50m2 stops
Southwest Logo
7:30 am - 7:30 pmSTL-SJO
12h 00m2 stops
$479Southwest
Find Deal
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
1:16 am - 11:01 amSJO-STL
9h 45m1 stop
Multiple Airlines Logo
5:11 pm - 11:27 amSTL-SJO
18h 16m1 stop
$527Multiple Airlines
Find Deal
Wed, Feb 4 - Thu, Feb 12
Multiple Airlines Logo
1:16 am - 11:01 amSJO-STL
9h 45m1 stop
Multiple Airlines Logo
12:20 pm - 7:45 amSTL-SJO
19h 25m2 stops
$621Multiple Airlines
Find Deal
Wed, Feb 4 - Thu, Feb 12
Alaska Airlines Logo
2:26 am - 11:56 pmSJO-STL
21h 30m2 stops
Alaska Airlines Logo
2:55 pm - 11:00 pmSTL-SJO
32h 05m2 stops
$722Alaska Airlines
Find Deal
Wed, Feb 25 - Mon, Mar 2
Alaska Airlines Logo
1:55 am - 11:59 pmSJO-STL
22h 04m2 stops
Alaska Airlines Logo
7:00 am - 11:28 pmSTL-SJO
40h 28m2 stops
$859Alaska Airlines
Find Deal
Wed, Nov 19 - Thu, Nov 27

American Airlines flights from Costa Rica to St. Louis

Our best American Airlines deals on Costa Rica to St. Louis flight tickets
American Airlines
Feb 26
SJO8:05 amSan José Juan Santamaria Intl
13h 35m
1 stop
STL9:40 pmLambert-St Louis
Mar 2
STL5:19 amLambert-St Louis
8h 46m
1 stop
SJO2:05 pmSan José Juan Santamaria Intl
$357
Find similar
American Airlines
Feb 26
SJO1:50 pmSan José Juan Santamaria Intl
20h 39m
1 stop
STL10:29 amLambert-St Louis
Mar 2
STL5:24 amLambert-St Louis
8h 51m
1 stop
SJO2:15 pmSan José Juan Santamaria Intl
$364
Find similar
American Airlines
Feb 26
SJO1:50 pmSan José Juan Santamaria Intl
7h 50m
1 stop
STL9:40 pmLambert-St Louis
Mar 2
STL11:18 amLambert-St Louis
10h 17m
2 stops
SJO9:35 pmSan José Juan Santamaria Intl
$369
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
Feb 26
SJO2:05 pmSan José Juan Santamaria Intl
8h 54m
1 stop
STL10:59 pmLambert-St Louis
Mar 2
STL7:41 amLambert-St Louis
29h 34m
2 stops
SJO1:15 pmSan José Juan Santamaria Intl
$413
Find similar
United Airlines
Oct 25
SJO1:30 pmSan José Juan Santamaria Intl
7h 28m
1 stop
STL9:58 pmLambert-St Louis
Nov 1
STL11:20 amLambert-St Louis
9h 19m
1 stop
SJO7:39 pmSan José Juan Santamaria Intl
$447
Find similar
United Airlines
Oct 25
SJO1:30 pmSan José Juan Santamaria Intl
21h 58m
2 stops
STL12:28 pmLambert-St Louis
Nov 1
STL8:00 amLambert-St Louis
14h 00m
2 stops
SJO9:00 pmSan José Juan Santamaria Intl
$452
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 October 23, 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

Thu 2/26

8:05 am-9:40 pm

1 stop13h 35m

Lambert-St Louis

Mon 3/2

5:19 am-2:05 pm

1 stop8h 46m

$357

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

1:50 pm-10:29 am

1 stop20h 39m

Lambert-St Louis

Mon 3/2

5:24 am-2:15 pm

1 stop8h 51m

$364

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

1:50 pm-9:40 pm

1 stop7h 50m

Lambert-St Louis

Mon 3/2

11:18 am-9:35 pm

2 stops10h 17m

$369

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

2:05 pm-10:59 pm

1 stop8h 54m

Lambert-St Louis

Mon 3/2

7:41 am-1:15 pm

2 stops29h 34m

$413

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

2:20 pm-9:00 pm

2 stops30h 40m

Lambert-St Louis

Mon 3/2

7:41 am-1:15 pm

2 stops29h 34m

$455

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/26

9:40 am-9:30 pm

2 stops11h 50m

Lambert-St Louis

Mon 3/2

7:30 am-7:30 pm

2 stops12h 00m

$479

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 2/4

1:16 am-11:01 am

1 stop9h 45m

Lambert-St Louis

Thu 2/12

5:11 pm-11:27 am

1 stop18h 16m

$527

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 2/4

1:16 am-11:01 am

1 stop9h 45m

Lambert-St Louis

Thu 2/12

12:20 pm-7:45 am

2 stops19h 25m

$621

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 2/25

2:26 am-11:56 pm

2 stops21h 30m

Lambert-St Louis

Mon 3/2

2:55 pm-11:00 pm

2 stops32h 05m

$722

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 11/19

1:55 am-11:59 pm

2 stops22h 04m

Lambert-St Louis

Thu 11/27

7:00 am-11:28 pm

2 stops40h 28m

$859

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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, January 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 $365. The month of August 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 12% 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
11,032 reviews
Search American Airlines flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
8,995 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
Florissant
O'Fallon
Wentzville
Collinsville
Fenton
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
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.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 11/22
Sat 11/29
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States