$238+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — STL
Oct 8 — Oct 151
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 September 8, 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 September 8, 2026.
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/26:00 am -
1 stop16h 59m
Sat 10/106:07 pm -
1 stop18h 53m
Deal found 9/5![American Airlines logo]()
$428
This American Airlines deal was found by Cheapflights users on 9/3. 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 11/2412:27 am -
1 stop21h 32m
Mon 11/305:56 am -
1 stop16h 53m
Deal found 9/3![American Airlines logo]()
$477
This Delta deal was found by Cheapflights users on 9/7. 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 11/252:37 pm -
1 stop9h 19m
Mon 11/3010:00 am -
1 stop12h 15m
Deal found 9/7![Delta logo]()
$482
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/287:45 am -
1 stop8h 05m
Thu 10/295:55 pm -
1 stop17h 30m
Deal found 9/3![United Airlines logo]()
$564
This Southwest deal was found by Cheapflights users on 9/7. 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.
Thu 10/229:00 am -
2 stops11h 00m
Thu 10/295:00 am -
1 stop8h 35m
Deal found 9/7![Southwest logo]()
$576
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/16:00 am -
2 stops16h 43m
Thu 10/157:16 am -
2 stops14h 05m
Deal found 9/5![American Airlines logo]()
$580
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 September 8, 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 September 8, 2026.
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/287:45 am -
1 stop8h 05m
Thu 10/295:55 pm -
1 stop17h 30m
Deal found 9/7![United Airlines logo]()
$634
This Southwest deal was found by Cheapflights users on 9/5. 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 -
1 stop13h 30m
Sat 10/38:55 am -
2 stops11h 45m
Deal found 9/5![Southwest logo]()
$664
This Delta deal was found by Cheapflights users on 9/6. 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 12/247:00 am -
1 stop11h 19m
Thu 12/312:45 pm -
1 stop7h 30m
Deal found 9/6![Delta logo]()
$672
This United Airlines deal was found by Cheapflights users on 9/4. 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 9/267:55 am -
2 stops14h 04m
Sat 10/36:15 am -
1 stop7h 06m
Deal found 9/4![United Airlines logo]()
$665
This Delta deal was found by Cheapflights users on 9/6. 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.
Mon 12/217:00 am -
1 stop9h 28m
Mon 12/289:52 am -
1 stop12h 23m
Deal found 9/6![Delta logo]()
$696
This United Airlines deal was found by Cheapflights users on 9/6. 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 9/247:55 am -
1 stop13h 35m
Tue 9/295:36 pm -
2 stops19h 45m
Deal found 9/6![United Airlines logo]()
$672
Last-minute flights from Costa Rica to St. LouisDiscover last-minute flight deals from Costa Rica to St. Louis. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from Costa Rica to St. Louis. Data last updated September 8, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/4. 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 9/251:00 pm -
1 stop9h 43m
Mon 10/55:40 am -
1 stop9h 20m
Deal found 9/4![American Airlines logo]()
$607
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/16:00 am -
2 stops16h 43m
Thu 10/157:16 am -
2 stops14h 05m
Deal found 9/5![American Airlines logo]()
$580
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/26:00 am -
1 stop16h 59m
Sat 10/106:07 pm -
1 stop18h 53m
Deal found 9/5![American Airlines logo]()
$428
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/21:25 pm -
2 stops32h 33m
Sat 10/103:12 pm -
1 stop29h 25m
Deal found 9/3![United Airlines logo]()
$612
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/186:00 am -
1 stop14h 59m
Sun 10/255:40 am -
1 stop9h 20m
Deal found 9/3![American Airlines logo]()
$616
This Southwest deal was found by Cheapflights users on 9/7. 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.
Thu 10/229:00 am -
2 stops11h 00m
Thu 10/295:00 am -
1 stop8h 35m
Deal found 9/7![Southwest logo]()
$576
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/287:45 am -
1 stop8h 05m
Thu 10/295:55 pm -
1 stop17h 30m
Deal found 9/3![United Airlines logo]()
$564
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 September 8, 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 September 8, 2026.
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/141:00 pm -
1 stop7h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![American Airlines logo]()
$238
This American Airlines deal was found by Cheapflights users on 9/3. 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 11/253:52 pm -
1 stop17h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![American Airlines logo]()
$269
This Delta deal was found by Cheapflights users on 9/7. 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 11/252:37 pm -
1 stop9h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Delta logo]()
$271
This American Airlines deal was found by Cheapflights users on 9/4. 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 10/21:00 pm -
1 stop9h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![American Airlines logo]()
$275
This Trip.com deal was found by Cheapflights users on 9/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/228:45 am -
1 stop30h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Air Canada logo]()
$317
This United Airlines deal was found by Cheapflights users on 9/4. 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 11/251:55 pm -
2 stops22h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![United Airlines logo]()
$323
This Air Canada deal was found by Cheapflights users on 9/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/188:45 am -
1 stop30h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Air Canada logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 11/227:00 am -
1 stop29h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$340
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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $428 (American Airlines) |
One-way from | $238 (American Airlines) |
Popular in | January |
Cheapest in | November |
Average price | $560 |
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 September 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
Cheapest round-trip
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Wed 10/14
6:00 am-10:14 pm
2 stops15h 14m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$243
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Wed 11/25
3:52 pm-9:37 am
1 stop17h 45m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$269
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Fri 10/2
6:00 am-12:27 am
2 stops17h 27m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$280
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Wed 11/25
1:55 pm-12:10 pm
2 stops22h 15m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$333
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Mon 1/18
8:45 am-3:26 pm
1 stop30h 41m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$340
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Sun 9/27
9:00 am-11:30 pm
1 stop13h 30m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$360
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Sun 1/17
1:15 am-11:24 pm
2 stops22h 09m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$361
Quickest round-trip
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Sun 11/22
1:20 pm-12:30 am
2 stops11h 10m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$364
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Sat 9/26
6:00 am-12:27 am
2 stops17h 27m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$364
San JoséSt. Louis
SJO San José Juan Santamaria Intl - STL Lambert-St Louis
SJOSTL
San José Juan Santamaria Intl
Wed 10/28
7:45 am-4:50 pm
1 stop8h 05m
Lambert-St Louis
Thu 10/29
5:55 pm-10:25 am
1 stop17h 30m
$634
Showing 1-10 of 15 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, 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 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 September 8, 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
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Food
6.6
Overall
7.4
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Crew
8.1
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Food
6.6
Overall
7.4
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Crew
8.1
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Food
6.6
Overall
7.4
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
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
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
St. Louis flight routes
Alternative routes for Costa Rica to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
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 September 8, 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 September 8, 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 September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$379 | Average$492 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$400 | Average$595 | FlexibilityNo cancel fee | On-time69% |