$266+ Cheap flights from Costa Rica to St. Louis (STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — STL
Aug 22 — Aug 291
Round-trip
1 adult, Economy
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Find cheap flights from Costa Rica to St. Louis with Cheapflights
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
Cheapest
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 July 23, 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 July 23, 2026.
This American Airlines deal was found by Cheapflights users on 7/19. 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 9/11:03 pm
SJO
- STL
1 stop9h 39m
American Airlines
Tue 9/295:00 am
STL
- SJO
1 stop16h 07m
American Airlines
Deal found 7/19![American Airlines logo]()
$515
This United Airlines deal was found by Cheapflights users on 7/19. 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 9/21:25 pm
SJO
- STL
2 stops21h 37m
United Airlines
Mon 9/287:01 pm
STL
- SJO
2 stops18h 20m
United Airlines
Deal found 7/19![United Airlines logo]()
$543
This Southwest deal was found by Cheapflights users on 7/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2712:35 pm
SJO
- STL
1 stop9h 25m
Southwest
Sun 11/15:10 am
STL
- SJO
1 stop7h 10m
Southwest
Deal found 7/19![Southwest logo]()
$546
This American Airlines deal was found by Cheapflights users on 7/19. 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 12/241:31 pm
SJO
- STL
1 stop19h 04m
American Airlines
Thu 12/315:17 am
STL
- SJO
1 stop9h 12m
American Airlines
Deal found 7/19![American Airlines logo]()
$556
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Sun 12/201:31 pm
SJO
- STL
1 stop19h 04m
American Airlines
Wed 1/2011:55 am
STL
- SJO
1 stop11h 48m
American Airlines
Deal found 7/22![American Airlines logo]()
$562
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Sun 12/208:45 am
SJO
- STL
2 stops12h 33m
United Airlines
Wed 1/206:00 am
STL
- SJO
2 stops14h 39m
United Airlines
Deal found 7/22![United Airlines logo]()
$565
This Delta deal was found by Cheapflights users on 7/19. 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.
Thu 9/31:14 pm
SJO
- STL
1 stop9h 44m
Delta
Sat 9/266:00 am
STL
- SJO
1 stop6h 54m
Delta
Deal found 7/19![Delta logo]()
$575
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 July 23, 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 July 23, 2026.
This United Airlines deal was found by Cheapflights users on 7/19. 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 9/21:25 pm
SJO
- STL
2 stops25h 13m
United Airlines
Sun 9/276:15 am
STL
- SJO
1 stop14h 22m
United Airlines
Deal found 7/19![United Airlines logo]()
$543
This Southwest deal was found by Cheapflights users on 7/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:00 am
SJO
- STL
1 stop13h 25m
Southwest
Sun 11/15:10 am
STL
- SJO
1 stop7h 10m
Southwest
Deal found 7/19![Southwest logo]()
$546
This American Airlines deal was found by Cheapflights users on 7/23. 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 12/241:31 pm
SJO
- STL
1 stop19h 04m
American Airlines
Thu 12/315:17 am
STL
- SJO
1 stop9h 12m
American Airlines
Deal found 7/23![American Airlines logo]()
$558
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Sun 12/208:45 am
SJO
- STL
2 stops12h 33m
United Airlines
Wed 1/206:00 am
STL
- SJO
2 stops14h 39m
United Airlines
Deal found 7/22![United Airlines logo]()
$565
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Tue 12/291:15 am
SJO
- STL
1 stop21h 04m
United Airlines
Tue 1/55:00 am
STL
- SJO
2 stops15h 39m
United Airlines
Deal found 7/21![United Airlines logo]()
$581
This United Airlines deal was found by Cheapflights users on 7/18. 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 12/2311:28 pm
SJO
- STL
2 stops17h 40m
United Airlines
Wed 12/306:15 am
STL
- SJO
1 stop16h 17m
United Airlines
Deal found 7/18![United Airlines logo]()
$581
Last-minute flights from Costa Rica to St. LouisDiscover last-minute flight deals from Costa Rica to St. Louis. Data last updated July 23, 2026 and is based on user searches.
Discover last-minute flight deals from Costa Rica to St. Louis. Data last updated July 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 7/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:00 am
SJO
- STL
1 stop15h 40m
American Airlines
Tue 8/185:42 am
STL
- SJO
1 stop9h 10m
American Airlines
Deal found 7/20![American Airlines logo]()
$640
This Expedia deal was found by Cheapflights users on 7/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:45 pm
SJO
- STL
2 stops23h 39m
Multiple Airlines
Wed 1/204:05 pm
STL
- SJO
2 stops23h 15m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$683
This United Airlines deal was found by Cheapflights users on 7/20. 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.
Thu 8/201:25 pm
SJO
- STL
2 stops21h 37m
United Airlines
Tue 1/195:00 am
STL
- SJO
2 stops13h 16m
United Airlines
Deal found 7/20![United Airlines logo]()
$688
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/294:20 pm
SJO
- STL
2 stops48h 02m
Multiple Airlines
Sun 9/278:34 pm
STL
- SJO
1 stop19h 37m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$654
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:07 am
SJO
- STL
1 stop8h 04m
Multiple Airlines
Fri 10/210:35 am
STL
- SJO
2 stops22h 20m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$687
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:07 am
SJO
- STL
1 stop8h 04m
Multiple Airlines
Fri 10/210:35 am
STL
- SJO
2 stops22h 20m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$663
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:07 am
SJO
- STL
1 stop8h 04m
Multiple Airlines
Wed 9/3010:35 am
STL
- SJO
2 stops29h 36m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$674
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:07 am
SJO
- STL
1 stop8h 04m
Multiple Airlines
Sun 9/2710:35 am
STL
- SJO
2 stops29h 36m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$679
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:07 am
SJO
- STL
1 stop8h 04m
Multiple Airlines
Tue 9/2910:35 am
STL
- SJO
2 stops29h 36m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$681
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 am
SJO
- STL
2 stops32h 31m
Multiple Airlines
Sun 9/278:34 pm
STL
- SJO
1 stop19h 37m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$667
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 July 23, 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 July 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:55 am
SJO
- STL
2 stops23h 45m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$266
This Priceline deal was found by Cheapflights users on 7/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:45 am
SJO
- STL
1 stop9h 54m
Frontier
Deal found 7/22![Frontier logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:07 am
SJO
- STL
2 stops25h 33m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$281
This United Airlines deal was found by Cheapflights users on 7/22. 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 10/1612:44 pm
SJO
- STL
1 stop31h 53m
United Airlines
Deal found 7/22![United Airlines logo]()
$282
This American Airlines deal was found by Cheapflights users on 7/21. 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 10/166:00 am
SJO
- STL
1 stop10h 26m
American Airlines
Deal found 7/21![American Airlines logo]()
$287
This American Airlines deal was found by Cheapflights users on 7/19. 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 11/2412:30 am
SJO
- STL
1 stop21h 31m
American Airlines
Deal found 7/19![American Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/201:20 pm
SJO
- STL
3 stops27h 02m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$307
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 July 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $515 (American Airlines) |
One-way from | $266 (Kiwi.com) |
Popular in | January |
Cheapest in | September |
Average price | $683 |
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 2,558,603 searches. Data last updated July 23, 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
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Wed 9/2
1:25 pm-3:38 pm
2 stops25h 13m
Lambert-St Louis
Sun 9/27
6:15 am-7:37 pm
1 stop14h 22m
$543
Quickest round-trip
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Sun 9/27
9:00 am-11:25 pm
1 stop13h 25m
Lambert-St Louis
Sun 11/1
5:10 am-12:20 pm
1 stop7h 10m
$546
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Thu 12/24
1:31 pm-8:35 am
1 stop19h 04m
Lambert-St Louis
Thu 12/31
5:17 am-2:29 pm
1 stop9h 12m
$558
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Sun 12/20
8:45 am-9:18 pm
2 stops12h 33m
Lambert-St Louis
Wed 1/20
6:00 am-8:39 pm
2 stops14h 39m
$565
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Tue 12/29
1:15 am-10:19 pm
1 stop21h 04m
Lambert-St Louis
Tue 1/5
5:00 am-8:39 pm
2 stops15h 39m
$581
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Wed 12/23
11:28 pm-5:08 pm
2 stops17h 40m
Lambert-St Louis
Wed 12/30
6:15 am-10:32 pm
1 stop16h 17m
$581
Cheapest one-way
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Sat 10/17
8:55 am-9:40 am
2 stops23h 45m
$266
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Sat 10/17
8:45 am-7:39 pm
1 stop9h 54m
$267
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Fri 10/16
12:44 pm-9:37 pm
1 stop31h 53m
$282
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Tue 11/24
12:30 am-10:01 pm
1 stop21h 31m
$292
Showing 1-10 of 14 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.
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
SJO-STL
What is the cheapest month to book a flight from Costa Rica to St. Louis?
Currently, September is the cheapest month in which you can book a flight from Costa Rica to St. Louis (average of $437). Flying from Costa Rica to St. Louis in January is currently the most expensive (average of $719). 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 July 23, 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.
Crew
8.1
Comfort
7.3
Entertainment
7.1
Overall
7.4
Food
6.6
Boarding
7.7
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Crew
8.1
Comfort
7.3
Entertainment
7.1
Overall
7.4
Food
6.6
Boarding
7.7
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
Crew
8.1
Comfort
7.3
Entertainment
7.1
Overall
7.4
Food
6.6
Boarding
7.7
Reviews
1 / 20
6.0
GoodROHIT,Jun 2026
IND - EWR
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 locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
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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.
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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 July 23, 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 July 23, 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 2,558,603 searches. Data last updated July 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$379 | Average$488 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$400 | Average$515 | FlexibilityNo cancel fee | On-time69% |