$278+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — STL
jun. 17 — jun. 241
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
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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 mayo 18, 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 mayo 18, 2026.
This United Airlines deal was found by Cheapflights users on 5/13. 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.
vie. 9/41:25 pm
SJO
- STL
2 stops21h 38m
United Airlines
dom. 9/612:59 pm
STL
- SJO
2 stops24h 22m
United Airlines
Deal found 5/13![United Airlines logo]()
$511
This Delta deal was found by Cheapflights users on 5/14. 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.
dom. 11/12:23 pm
SJO
- STL
1 stop9h 16m
Delta
sáb. 11/2811:51 am
STL
- SJO
1 stop10h 24m
Delta
Deal found 5/14![Delta logo]()
$539
This United Airlines deal was found by Cheapflights users on 5/16. 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.
sáb. 5/306:40 am
SJO
- STL
1 stop13h 17m
United Airlines
dom. 6/78:35 am
STL
- SJO
1 stop26h 36m
United Airlines
Deal found 5/16![United Airlines logo]()
$548
This American Airlines deal was found by Cheapflights users on 5/14. 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.
lun. 8/171:29 pm
SJO
- STL
1 stop19h 03m
American Airlines
sáb. 8/226:25 pm
STL
- SJO
2 stops18h 09m
American Airlines
Deal found 5/14![American Airlines logo]()
$551
This American Airlines deal was found by Cheapflights users on 5/14. 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.
sáb. 9/127:00 am
SJO
- STL
2 stops14h 24m
American Airlines
dom. 9/204:47 pm
STL
- SJO
2 stops19h 18m
American Airlines
Deal found 5/14![American Airlines logo]()
$553
This American Airlines deal was found by Cheapflights users on 5/15. 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.
mié. 6/107:00 am
SJO
- STL
1 stop14h 57m
American Airlines
vie. 6/127:04 am
STL
- SJO
1 stop16h 39m
American Airlines
Deal found 5/15![American Airlines logo]()
$557
This American Airlines deal was found by Cheapflights users on 5/13. 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.
mié. 7/1511:41 pm
SJO
- STL
1 stop15h 47m
American Airlines
lun. 7/206:12 pm
STL
- SJO
1 stop19h 48m
American Airlines
Deal found 5/13![American Airlines logo]()
$566
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 mayo 18, 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 mayo 18, 2026.
This United Airlines deal was found by Cheapflights users on 5/14. 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.
vie. 9/47:55 am
SJO
- STL
2 stops27h 08m
United Airlines
dom. 9/65:30 pm
STL
- SJO
2 stops19h 51m
United Airlines
Deal found 5/14![United Airlines logo]()
$521
This Delta deal was found by Cheapflights users on 5/14. 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.
dom. 11/12:23 pm
SJO
- STL
1 stop9h 16m
Delta
sáb. 11/2811:51 am
STL
- SJO
1 stop10h 24m
Delta
Deal found 5/14![Delta logo]()
$539
This American Airlines deal was found by Cheapflights users on 5/13. 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.
mié. 7/1511:41 pm
SJO
- STL
1 stop15h 47m
American Airlines
lun. 7/206:12 pm
STL
- SJO
1 stop19h 48m
American Airlines
Deal found 5/13![American Airlines logo]()
$566
This Orbitz deal was found by Cheapflights users on 5/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/123:10 pm
SJO
- STL
2 stops21h 52m
Multiple Airlines
sáb. 8/154:09 pm
STL
- SJO
1 stop17h 11m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$591
This United Airlines deal was found by Cheapflights users on 5/16. 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.
sáb. 5/306:40 am
SJO
- STL
2 stops24h 59m
United Airlines
dom. 6/78:35 am
STL
- SJO
1 stop26h 36m
United Airlines
Deal found 5/16![United Airlines logo]()
$548
This United Airlines deal was found by Cheapflights users on 5/17. 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.
mar. 6/912:30 am
SJO
- STL
2 stops20h 00m
United Airlines
vie. 6/126:14 am
STL
- SJO
1 stop17h 25m
United Airlines
Deal found 5/17![United Airlines logo]()
$603
Last-minute flights from Costa Rica to St. LouisDiscover last-minute flight deals from Costa Rica to St. Louis. Data last updated mayo 18, 2026 and is based on user searches.
Discover last-minute flight deals from Costa Rica to St. Louis. Data last updated mayo 18, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 5/15. 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.
jue. 5/2111:13 am
SJO
- STL
1 stop21h 54m
United Airlines
mar. 5/266:00 am
STL
- SJO
2 stops30h 38m
United Airlines
Deal found 5/15![United Airlines logo]()
$630
This deal was found by Cheapflights users on 5/13. 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.
vie. 5/2211:13 am
SJO
- STL
1 stop10h 32m
United Airlines
dom. 5/2411:10 am
STL
- SJO
1 stop9h 27m
United Airlines
Deal found 5/13![United Airlines logo]()
$586
This American Airlines deal was found by Cheapflights users on 5/16. 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.
dom. 5/246:00 am
SJO
- STL
2 stops14h 42m
American Airlines
dom. 5/318:36 am
STL
- SJO
1 stop15h 06m
American Airlines
Deal found 5/16![American Airlines logo]()
$633
This United Airlines deal was found by Cheapflights users on 5/16. 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.
sáb. 5/306:40 am
SJO
- STL
1 stop13h 17m
United Airlines
dom. 6/78:35 am
STL
- SJO
1 stop26h 36m
United Airlines
Deal found 5/16![United Airlines logo]()
$548
This United Airlines deal was found by Cheapflights users on 5/17. 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.
mar. 6/912:30 am
SJO
- STL
2 stops20h 00m
United Airlines
vie. 6/126:14 am
STL
- SJO
1 stop17h 25m
United Airlines
Deal found 5/17![United Airlines logo]()
$603
This American Airlines deal was found by Cheapflights users on 5/15. 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.
mié. 6/107:00 am
SJO
- STL
1 stop14h 57m
American Airlines
vie. 6/127:04 am
STL
- SJO
1 stop16h 39m
American Airlines
Deal found 5/15![American Airlines logo]()
$557
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 mayo 18, 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 mayo 18, 2026.
This United Airlines deal was found by Cheapflights users on 5/14. 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.
mar. 7/711:13 am
SJO
- STL
1 stop21h 54m
United Airlines
Deal found 5/14![United Airlines logo]()
$278
This United Airlines deal was found by Cheapflights users on 5/14. 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.
lun. 7/137:55 am
SJO
- STL
2 stops23h 39m
United Airlines
Deal found 5/14![United Airlines logo]()
$305
This American Airlines deal was found by Cheapflights users on 5/14. 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.
lun. 7/132:00 pm
SJO
- STL
1 stop17h 34m
American Airlines
Deal found 5/14![American Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 5/14. 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.
mar. 7/77:48 pm
SJO
- STL
3 stops44h 49m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 5/14. 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.
lun. 7/131:28 pm
SJO
- STL
3 stops52h 55m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$458
This deal was found by Cheapflights users on 5/14. 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.
mar. 8/117:55 am
SJO
- STL
1 stop9h 09m
United Airlines
Deal found 5/14![United Airlines logo]()
$547
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 mayo 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $511 (United Airlines) |
One-way from | $278 (United Airlines) |
Popular in | January |
Cheapest in | October |
Average price | $519 |
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 mayo 18, 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
vie. 9/4
7:55 am-12:03 pm
2 stops27h 08m
Lambert-St Louis
dom. 9/6
5:30 pm-12:21 pm
2 stops19h 51m
$521
Quickest round-trip
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
dom. 11/1
2:23 pm-11:39 pm
1 stop9h 16m
Lambert-St Louis
sáb. 11/28
11:51 am-10:15 pm
1 stop10h 24m
$539
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
sáb. 5/30
6:40 am-8:39 am
2 stops24h 59m
Lambert-St Louis
dom. 6/7
8:35 am-10:11 am
1 stop26h 36m
$548
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
mié. 7/15
11:41 pm-4:28 pm
1 stop15h 47m
Lambert-St Louis
lun. 7/20
6:12 pm-1:00 pm
1 stop19h 48m
$566
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
mié. 8/12
3:10 pm-2:02 pm
2 stops21h 52m
Lambert-St Louis
sáb. 8/15
4:09 pm-8:20 am
1 stop17h 11m
$591
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
mar. 6/9
12:30 am-9:30 pm
2 stops20h 00m
Lambert-St Louis
vie. 6/12
6:14 am-10:39 pm
1 stop17h 25m
$603
Cheapest one-way
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
mar. 7/7
11:13 am-10:07 am
1 stop21h 54m
$278
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
lun. 7/13
7:55 am-8:34 am
2 stops23h 39m
$305
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
mar. 7/7
7:48 pm-5:37 pm
3 stops44h 49m
$371
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
lun. 7/13
1:28 pm-7:23 pm
3 stops52h 55m
$458
Showing 1-10 of 11 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 $186). Flying from Costa Rica to St. Louis in January is currently the most expensive (average of $515). 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 mayo 18, 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
6.6
Overall
7.4
Comfort
7.3
Boarding
7.7
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Entertainment
7.1
Food
6.6
Overall
7.4
Comfort
7.3
Boarding
7.7
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Entertainment
7.1
Food
6.6
Overall
7.4
Comfort
7.3
Boarding
7.7
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - 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
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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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 mayo 18, 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 mayo 18, 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 mayo 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$274 | Average$488 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$328 | Average$426 | FlexibilityNo cancel fee | On-time69% |