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Cheap flights from Chicago (CHI) 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 Chicago (CHI) to San Antonio (SAT)

How to find the cheapest flight from Chicago (CHI) to San Antonio (SAT)
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How to find the cheapest flight from Chicago (CHI) to San Antonio (SAT)
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How to find the cheapest flight from Chicago (CHI) to San Antonio (SAT)
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Cheap flights from Chicago to San Antonio in September , October 2026

30 Sep - 07 Oct $ 410.00
CHI
Chicago
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
CHI
Chicago
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30 Sep - 05 Oct $ 432.00
CHI
Chicago
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
CHI
Chicago
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29 Sep - 05 Oct $ 1,082.00
CHI
Chicago
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
CHI
Chicago
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Last minute flights from Chicago to San Antonio

29 Sep - 30 Sep $ 410.00
CHI
Chicago
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
CHI
Chicago
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29 Sep - 01 Oct $ 410.00
CHI
Chicago
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
CHI
Chicago
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29 Sep - 01 Oct $ 1,731.00
CHI
Chicago
Alaska Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Alaska Airlines
1 STOPS
CHI
Chicago
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One-way flights to San Antonio from Chicago

3:50 PM - 7:06 AM
Frontier Airlines
1 Stops
17h 17m
CHI - SAT
$ 205
Kiwi
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9:05 AM - 9:05 AM
United Airlines
0 Stops
3h 6m
CHI - SAT
$ 278
Kiwi
Pick dates
7:50 PM - 7:50 PM
United Airlines
0 Stops
3h
CHI - SAT
$ 282
Kiwi
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How to find the cheapest flight from Chicago (CHI) to San Antonio (SAT)

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