$140+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — STL
Apr 29 — May 61
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
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Best
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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 March 30, 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 March 30, 2026.
This American Airlines deal was found by Cheapflights users on 3/25. 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.
Wed 5/136:30 am
SJO
- STL
2 stops14h 49m
American Airlines
Tue 6/26:12 pm
STL
- SJO
2 stops18h 38m
American Airlines
Deal found 3/25![American Airlines logo]()
$342
This American Airlines deal was found by Cheapflights users on 3/25. 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.
Tue 5/126:30 am
SJO
- STL
1 stop14h 54m
American Airlines
Tue 6/26:12 pm
STL
- SJO
2 stops19h 57m
American Airlines
Deal found 3/25![American Airlines logo]()
$348
This American Airlines deal was found by Cheapflights users on 3/25. 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.
Wed 5/136:30 am
SJO
- STL
1 stop14h 54m
American Airlines
Thu 5/289:41 am
STL
- SJO
1 stop14h 01m
American Airlines
Deal found 3/25![American Airlines logo]()
$356
This United Airlines deal was found by Cheapflights users on 3/26. 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 5/167:55 am
SJO
- STL
1 stop13h 35m
United Airlines
Wed 6/38:35 am
STL
- SJO
1 stop12h 02m
United Airlines
Deal found 3/26![United Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 3/26. 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 5/137:55 am
SJO
- STL
1 stop13h 35m
United Airlines
Tue 6/28:35 am
STL
- SJO
1 stop26h 36m
United Airlines
Deal found 3/26![United Airlines logo]()
$391
This BusinessClass deal was found by Cheapflights users on 3/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:10 pm
SJO
- STL
2 stops19h 20m
GOL
Tue 4/215:24 am
STL
- SJO
1 stop6h 43m
GOL
Deal found 3/25![GOL logo]()
$407
This United Airlines deal was found by Cheapflights users on 3/28. 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 5/147:55 am
SJO
- STL
2 stops23h 44m
United Airlines
Wed 6/31:13 pm
STL
- SJO
2 stops21h 58m
United Airlines
Deal found 3/28![United Airlines logo]()
$413
This American Airlines deal was found by Cheapflights users on 3/25. 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 4/166:30 am
SJO
- STL
1 stop14h 54m
American Airlines
Tue 4/2111:06 am
STL
- SJO
1 stop9h 01m
American Airlines
Deal found 3/25![American Airlines logo]()
$418
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 March 30, 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 March 30, 2026.
This BusinessClass deal was found by Cheapflights users on 3/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:10 pm
SJO
- STL
2 stops19h 20m
GOL
Tue 4/215:24 am
STL
- SJO
1 stop6h 43m
GOL
Deal found 3/25![GOL logo]()
$407
This United Airlines deal was found by Cheapflights users on 3/28. 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 5/141:25 pm
SJO
- STL
1 stop19h 05m
United Airlines
Wed 6/31:13 pm
STL
- SJO
2 stops21h 58m
United Airlines
Deal found 3/28![United Airlines logo]()
$413
This American Airlines deal was found by Cheapflights users on 3/29. 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 9/187:00 am
SJO
- STL
1 stop15h 12m
American Airlines
Sat 9/263:33 pm
STL
- SJO
1 stop23h 25m
American Airlines
Deal found 3/29![American Airlines logo]()
$480
This Delta deal was found by Cheapflights users on 3/29. 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 5/131:20 pm
SJO
- STL
1 stop9h 39m
Delta
Thu 5/286:00 am
STL
- SJO
1 stop6h 52m
Delta
Deal found 3/29![Delta logo]()
$497
This United Airlines deal was found by Cheapflights users on 3/27. 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 5/131:25 pm
SJO
- STL
2 stops30h 48m
United Airlines
Tue 6/21:13 pm
STL
- SJO
2 stops21h 58m
United Airlines
Deal found 3/27![United Airlines logo]()
$426
This United Airlines deal was found by Cheapflights users on 3/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/812:44 pm
SJO
- STL
2 stops23h 03m
United Airlines
Tue 5/126:00 am
STL
- SJO
1 stop7h 21m
United Airlines
Deal found 3/25![United Airlines logo]()
$456
This United Airlines deal was found by Cheapflights users on 3/26. 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 5/167:55 am
SJO
- STL
2 stops23h 44m
United Airlines
Wed 6/35:41 pm
STL
- SJO
2 stops17h 30m
United Airlines
Deal found 3/26![United Airlines logo]()
$456
Last-minute flights from Costa Rica to St. LouisDiscover last-minute flight deals from Costa Rica to St. Louis. Data last updated March 30, 2026 and is based on user searches.
Discover last-minute flight deals from Costa Rica to St. Louis. Data last updated March 30, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 3/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:35 pm
SJO
- STL
2 stops19h 19m
GOL
Sat 5/96:11 pm
STL
- SJO
2 stops17h 56m
GOL
Deal found 3/25![GOL logo]()
$421
This American Airlines deal was found by Cheapflights users on 3/26. 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 4/156:30 am
SJO
- STL
1 stop14h 54m
American Airlines
Sat 5/912:27 pm
STL
- SJO
1 stop10h 09m
American Airlines
Deal found 3/26![American Airlines logo]()
$502
This Trip.com deal was found by Cheapflights users on 3/29. 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.
Wed 4/157:00 am
SJO
- STL
1 stop15h 19m
Multiple Airlines
Sat 5/98:08 pm
STL
- SJO
2 stops20h 10m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$509
This BusinessClass deal was found by Cheapflights users on 3/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:10 pm
SJO
- STL
2 stops19h 20m
GOL
Tue 4/215:24 am
STL
- SJO
1 stop6h 43m
GOL
Deal found 3/25![GOL logo]()
$407
This American Airlines deal was found by Cheapflights users on 3/25. 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 4/166:30 am
SJO
- STL
1 stop14h 54m
American Airlines
Tue 4/2111:06 am
STL
- SJO
1 stop9h 01m
American Airlines
Deal found 3/25![American Airlines logo]()
$418
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 March 30, 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 March 30, 2026.
This Frontier deal was found by Cheapflights users on 3/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1110:06 am
SJO
- STL
1 stop12h 19m
Frontier
Deal found 3/26![Frontier logo]()
$140
This Priceline deal was found by Cheapflights users on 3/27. 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 4/410:06 am
SJO
- STL
1 stop12h 19m
Frontier
Deal found 3/27![Frontier logo]()
$183
This Priceline deal was found by Cheapflights users on 3/29. 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.
Sun 6/289:35 am
SJO
- STL
1 stop13h 39m
Frontier
Deal found 3/29![Frontier logo]()
$204
This United Airlines deal was found by Cheapflights users on 3/29. 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 6/2312:30 am
SJO
- STL
1 stop8h 37m
United Airlines
Deal found 3/29![United Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 3/26. 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.
Tue 4/1412:19 pm
SJO
- STL
2 stops17h 31m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 4/911:38 am
SJO
- STL
1 stop19h 13m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$244
This American Airlines deal was found by Cheapflights users on 3/26. 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 4/1612:10 pm
SJO
- STL
2 stops22h 37m
American Airlines
Deal found 3/26![American Airlines logo]()
$245
This United Airlines deal was found by Cheapflights users on 3/29. 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 6/2712:30 am
SJO
- STL
1 stop8h 37m
United Airlines
Deal found 3/29![United Airlines logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 4/1011:38 am
SJO
- STL
1 stop11h 20m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$261
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 March 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $342 (American Airlines) |
One-way from | $140 (Frontier) |
Popular in | January |
Cheapest in | October |
Average price | $531 |
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 March 30, 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
Thu 4/16
12:10 pm-8:30 am
2 stops19h 20m
Lambert-St Louis
Tue 4/21
5:24 am-11:07 am
1 stop6h 43m
$407
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Thu 5/14
1:25 pm-9:30 am
1 stop19h 05m
Lambert-St Louis
Wed 6/3
1:13 pm-10:11 am
2 stops21h 58m
$413
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Wed 5/13
1:25 pm-9:13 pm
2 stops30h 48m
Lambert-St Louis
Tue 6/2
1:13 pm-10:11 am
2 stops21h 58m
$426
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Fri 5/8
12:44 pm-12:47 pm
2 stops23h 03m
Lambert-St Louis
Tue 5/12
6:00 am-12:21 pm
1 stop7h 21m
$456
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Sat 5/16
7:55 am-8:39 am
2 stops23h 44m
Lambert-St Louis
Wed 6/3
5:41 pm-10:11 am
2 stops17h 30m
$456
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Fri 9/18
7:00 am-11:12 pm
1 stop15h 12m
Lambert-St Louis
Sat 9/26
3:33 pm-1:58 pm
1 stop23h 25m
$480
Quickest round-trip
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Wed 5/13
1:20 pm-11:59 pm
1 stop9h 39m
Lambert-St Louis
Thu 5/28
6:00 am-11:52 am
1 stop6h 52m
$497
Cheapest one-way
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Sun 6/28
9:35 am-12:14 am
1 stop13h 39m
$204
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Wed 6/24
7:55 am-8:41 am
2 stops23h 46m
$219
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Thu 4/9
11:38 am-7:51 am
1 stop19h 13m
$244
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, April is the cheapest month in which you can book a flight from Costa Rica to St. Louis (average of $220). Flying from Costa Rica to St. Louis in January is currently the most expensive (average of $573). 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 March 30, 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
Boarding
7.7
Food
6.6
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
6.0
GoodGerry,Jan 2026
YVR - DEN
Crew
8.1
Comfort
7.3
Boarding
7.7
Food
6.6
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
6.0
GoodGerry,Jan 2026
YVR - DEN
Crew
8.1
Comfort
7.3
Boarding
7.7
Food
6.6
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
6.0
GoodGerry,Jan 2026
YVR - DEN
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
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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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 March 30, 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 March 30, 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 March 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$274 | Average$473 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$306 | Average$418 | FlexibilityNo cancel fee | On-time69% |