Southwest® flights from St. Louis to Costa Rica
expand_more
1 Passenger
expand_morePromo Code
expand_moretoday
today
Popular flight deals and low fares from St. Louis
flight_takeoff
flight_land
$
St. Louis (STL)to
Liberia, Costa Rica (LIR)Depart: 10/17/2026
From
$320
Seen: 3 hrs ago
One-way
Basic
St. Louis (STL)to
San Jose, Costa Rica (SJO)Depart: 10/07/2026
From
$493
Seen: 18 hrs ago
One-way
Choice
*Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.
Shop more flights from St. Louis
flight_takeoff
flight_land
$
From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| St. Louis (STL) | San Jose, Costa Rica (SJO) | One-way / Basic | Depart: 01/31/2027 | From $230 Seen: 7 hrs ago |
| St. Louis (STL) | Liberia, Costa Rica (LIR) | One-way / Basic | Depart: 11/02/2026 | From $264 Seen: 23 hrs ago |
*Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.
More Routes from St. Louis
Popular Routes from Southwest Airlines®
Explore Southwest Airlines® Top-Pick Destinations