Cheap flights from Saint Louis to San Antonio
Cheapest current fares: $133 in September 2026, 1,266 km direct flight in ~1h 29m.
Cheapest month-by-month fares
Lowest available fare per calendar month from Saint Louis (STL) to San Antonio (SAT). Refreshed daily.
Saint Louis (STL) → San Antonio (SAT)
- September 2026 $133
Frequently asked questions
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What is the cheapest month to fly from Saint Louis to San Antonio?
Based on current 6-month forward fare data, September 2026 is the cheapest month to fly from Saint Louis (STL) to San Antonio (SAT), with fares starting from $133.
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What is the lowest current fare from STL to SAT?
The lowest currently-listed fare from Saint Louis (STL) to San Antonio (SAT) is $133 on 2026-09-09.
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How long is the flight from Saint Louis to San Antonio?
Direct flights from STL to SAT cover approximately 1,266 km (787 miles), with an estimated flight time of 1h 29m. Operating airlines: WN.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.