Southwest® flights from St. Louis to Costa Rica
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Popular flight deals and low fares from St. Louis
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St. Louis (STL)to
Liberia, Costa Rica (LIR)Depart: 07/26/2026
From
$240
Seen: 16 hrs ago
One-way
Basic
St. Louis (STL)to
San Jose, Costa Rica (SJO)Depart: 08/03/2026
From
$278
Seen: 15 hrs ago
One-way
Basic
*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
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From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| St. Louis (STL) | Liberia, Costa Rica (LIR) | One-way / Basic | Depart: 09/13/2026 | From $233 Seen: 14 hrs ago |
| St. Louis (STL) | San Jose, Costa Rica (SJO) | One-way / Basic | Depart: 08/24/2026 | From $234 Seen: 17 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.
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