Southwest® flights from St. Louis to Mexico
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Popular flight deals and low fares from St. Louis
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St. Louis (STL)to
Cancun (CUN)Depart: 12/30/2025
From
$270
Seen: 11 hrs ago
One-way
Basic
St. Louis (STL)to
Los Cabos (SJD)Depart: 12/07/2025
From
$220
Seen: 6 hrs ago
One-way
Basic
St. Louis (STL)to
Puerto Vallarta (PVR)Depart: 12/16/2025
From
$254
Seen: 22 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) | Cancun (CUN) | One-way / Basic | Depart: 02/16/2026 | From $201 Seen: 3 hrs ago |
| St. Louis (STL) | Los Cabos (SJD) | One-way / Basic | Depart: 02/18/2026 | From $179 Seen: 10 hrs ago |
| St. Louis (STL) | Puerto Vallarta (PVR) | One-way / Basic | Depart: 02/03/2026 | From $209 Seen: 1 hour 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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