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: 08/11/2026
From
$215
Seen: 20 hrs ago
One-way
Basic
St. Louis (STL)to
Los Cabos (SJD)Depart: 08/02/2026
From
$219
Seen: 19 hrs ago
One-way
Basic
St. Louis (STL)to
Puerto Vallarta (PVR)Depart: 08/06/2026
From
$319
Seen: 16 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.
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From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| St. Louis (STL) | Los Cabos (SJD) | One-way / Basic | Depart: 10/04/2026 | From $174 Seen: 18 hrs ago |
| St. Louis (STL) | Cancun (CUN) | One-way / Basic | Depart: 09/13/2026 | From $211 Seen: 5 hrs ago |
| St. Louis (STL) | Puerto Vallarta (PVR) | One-way / Basic | Depart: 09/09/2026 | From $249 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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