$241+ Cheap flights from Costa Rica to St. Louis (STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — STL
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Costa Rica to St. Louis
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Best
Last-minute
One-way
Cheapest flights from Costa Rica to St. LouisExplore the most affordable flight options available from Costa Rica to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
Explore the most affordable flight options available from Costa Rica to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:03 pm -
1 stop18h 28m
Sun 11/296:00 am -
1 stop16h 49m
Deal found 10/21![American Airlines logo]()
$461
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:25 pm -
1 stop8h 01m
Fri 11/275:55 pm -
1 stop17h 30m
Deal found 10/20![United Airlines logo]()
$484
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/253:32 pm -
1 stop18h 05m
Sun 11/295:00 am -
1 stop9h 20m
Deal found 10/24![American Airlines logo]()
$511
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:07 pm -
1 stop9h 51m
Mon 11/306:46 am -
1 stop16h 03m
Deal found 10/22![American Airlines logo]()
$535
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:18 pm -
1 stop20h 44m
Wed 11/46:00 am -
1 stop8h 35m
Deal found 10/23![American Airlines logo]()
$731
Best flights from Costa Rica to St. LouisDiscover carefully curated flight deals from Costa Rica to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
Discover carefully curated flight deals from Costa Rica to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:25 pm -
1 stop8h 01m
Fri 11/275:55 pm -
1 stop17h 30m
Deal found 10/20![United Airlines logo]()
$484
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/253:32 pm -
1 stop18h 05m
Sun 11/295:00 am -
1 stop9h 20m
Deal found 10/24![American Airlines logo]()
$511
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:07 pm -
1 stop9h 51m
Mon 11/306:46 am -
1 stop16h 03m
Deal found 10/22![American Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:25 pm -
2 stops20h 12m
Sun 11/296:50 pm -
2 stops16h 35m
Deal found 10/22![United Airlines logo]()
$621
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2411:24 am -
2 stops12h 52m
Thu 12/315:00 am -
1 stop8h 56m
Deal found 10/25![American Airlines logo]()
$617
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/259:05 am -
2 stops14h 33m
Thu 12/316:15 am -
1 stop7h 07m
Deal found 10/21![United Airlines logo]()
$650
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:28 pm -
2 stops15h 06m
Thu 12/36:00 am -
1 stop13h 53m
Deal found 10/23![United Airlines logo]()
$669
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:45 am -
1 stop13h 40m
Sun 11/296:15 am -
1 stop7h 07m
Deal found 10/23![United Airlines logo]()
$678
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/81:15 am -
2 stops20h 22m
Sat 1/305:02 am -
2 stops15h 37m
Deal found 10/20![United Airlines logo]()
$693
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/269:05 am -
1 stop14h 00m
Sat 1/26:15 am -
1 stop14h 24m
Deal found 10/22![United Airlines logo]()
$773
Last-minute flights from Costa Rica to St. LouisDiscover last-minute flight deals from Costa Rica to St. Louis. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Costa Rica to St. Louis. Data last updated October 25, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:18 pm -
1 stop20h 44m
Wed 11/46:00 am -
1 stop8h 35m
Deal found 10/23![American Airlines logo]()
$731
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:03 pm -
1 stop18h 28m
Sun 11/296:00 am -
1 stop16h 49m
Deal found 10/21![American Airlines logo]()
$461
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:25 pm -
1 stop8h 01m
Fri 11/275:55 pm -
1 stop17h 30m
Deal found 10/20![United Airlines logo]()
$484
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/253:32 pm -
1 stop18h 05m
Sun 11/295:00 am -
1 stop9h 20m
Deal found 10/24![American Airlines logo]()
$511
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:07 pm -
1 stop9h 51m
Mon 11/306:46 am -
1 stop16h 03m
Deal found 10/22![American Airlines logo]()
$535
One-way flights from Costa Rica to St. LouisSearch for one-way flight options from Costa Rica to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from Costa Rica to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/42:20 pm -
1 stop8h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$241
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:00 am -
1 stop16h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Delta logo]()
$257
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:07 pm -
1 stop9h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![American Airlines logo]()
$262
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:07 pm -
1 stop9h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![American Airlines logo]()
$273
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:00 am -
1 stop9h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/237:30 am -
1 stop13h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$301
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:07 pm -
1 stop9h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![American Airlines logo]()
$310
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:07 pm -
2 stops22h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![American Airlines logo]()
$315
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2511:28 pm -
2 stops16h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$316
This BusinessClass deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/93:16 pm -
2 stops19h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![GOL logo]()
$527
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/95:20 pm -
1 stop16h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$548
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/105:20 pm -
2 stops30h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$554
Find flight deals from Costa Rica to St. Louis
Keep the following information in mind while searching for Costa Rica to St. Louis flight deals. Data was last updated October 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $460 (American Airlines) |
One-way from | $241 |
Popular in | October |
Cheapest in | November |
Average price | $718 |
Cheapflights 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, Cheapflights users made 7,457,451 searches. Data last updated October 25, 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
Cheapest round-trip
LiberiaSt. Louis
LIR Liberia - STL Lambert-St Louis
LIRSTL
Liberia
Thu 2/4
2:20 pm-10:30 pm
1 stop8h 10m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$241
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Wed 11/18
7:00 am-4:43 pm
1 stop9h 43m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$257
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Wed 11/25
2:07 pm-11:58 pm
1 stop9h 51m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$273
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Wed 11/25
7:00 am-4:43 pm
1 stop9h 43m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$287
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Sat 1/23
7:30 am-9:37 pm
2 stops14h 07m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$306
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Wed 11/25
11:28 pm-3:43 pm
2 stops16h 15m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$316
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Thu 11/19
2:07 pm-10:08 am
2 stops20h 01m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$321
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Sat 1/9
10:51 am-7:50 pm
1 stop8h 59m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$436
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Fri 11/20
2:25 pm-10:26 pm
1 stop8h 01m
Lambert-St Louis
Fri 11/27
5:55 pm-11:25 am
1 stop17h 30m
$484
LiberiaSt. Louis
LIR Liberia - STL Lambert-St Louis
LIRSTL
Liberia
Wed 11/25
3:32 pm-9:37 am
1 stop18h 05m
Lambert-St Louis
Sun 11/29
5:00 am-2:20 pm
1 stop9h 20m
$511
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Costa Rica to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Costa Rica with our price prediction graph.
LIR-STL
SJO-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Costa Rica to St. Louis
CR0-STL
LIR-STL
SJO-STL
What is the cheapest month to book a flight from Costa Rica to St. Louis?
Currently, November is the cheapest month in which you can book a flight from Costa Rica to St. Louis (average of $469). Flying from Costa Rica to St. Louis in October is currently the most expensive (average of $718). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated October 25, 2026.
See what other customers who have flown with United Airlines and American Airlines from Costa Rica to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.1
Food
6.7
Boarding
7.7
Overall
7.3
Comfort
7.3
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Entertainment
7.1
Food
6.7
Boarding
7.7
Overall
7.3
Comfort
7.3
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Entertainment
7.1
Food
6.7
Boarding
7.7
Overall
7.3
Comfort
7.3
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Related info for your journey
Find useful and relevant information for your journey from Costa Rica to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Chesterfield
Collinsville
Edwardsville
Glencoe
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Alternative routes for Costa Rica to St. Louis
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Costa Rica to St. Louis by cabin class
Find flights from Costa Rica to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Costa Rica and St. Louis flights
Browse other Costa Rica and St. Louis flight options. Last updated on October 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 25, 2026.
Top 2 airlines flying from Costa Rica to St. Louis
Discover the top 2 airlines that operate flights from Costa Rica to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$398 | Average$583 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$400 | Average$662 | FlexibilityNo cancel fee | On-time69% |