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Cheap flights from St Louis (STL) to San Antonio (SAT)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to San Antonio (SAT)

How to find the cheapest flight from St Louis (STL) to San Antonio (SAT)
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How to find the cheapest flight from St Louis (STL) to San Antonio (SAT)
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How to find the cheapest flight from St Louis (STL) to San Antonio (SAT)
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Cheap flights from St Louis to San Antonio in September , October 2026

30 Sep - 26 Oct $ 674.00
STL
St Louis
Frontier Airlines
2 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
STL
St Louis
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28 Sep - 09 Oct $ 1,397.00
STL
St Louis
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
STL
St Louis
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28 Sep - 09 Oct $ 1,683.00
STL
St Louis
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
STL
St Louis
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Last minute flights from St Louis to San Antonio

29 Sep - 01 Oct $ 973.00
STL
St Louis
Frontier Airlines
3 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
2 STOPS
STL
St Louis
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28 Sep - 01 Oct $ 1,938.00
STL
St Louis
Alaska Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Alaska Airlines
1 STOPS
STL
St Louis
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28 Sep - 30 Sep $ 5,750.00
STL
St Louis
Alaska Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Alaska Airlines
2 STOPS
STL
St Louis
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One-way flights to San Antonio from St Louis

6:15 AM - 9:35 AM
United Airlines
1 Stops
4h 28m
STL - SAT
$ 528
Kiwi
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1:36 PM - 5:30 PM
United Airlines
1 Stops
7h 6m
STL - SAT
$ 530
Kiwi
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3:12 PM - 6:20 PM
United Airlines
1 Stops
4h 16m
STL - SAT
$ 533
Kiwi
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How to find the cheapest flight from St Louis (STL) to San Antonio (SAT)

Related info for your journey
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How to find the cheapest flight from St Louis (STL) to San Antonio (SAT)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to San Antonio (SAT)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.