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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 January , February 2026

30 Jan - 10 Feb $ 254.00
CHI
Chicago
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
CHI
Chicago
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22 Jan - 04 Feb $ 259.00
CHI
Chicago
Spirit Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Spirit Airlines
1 STOPS
CHI
Chicago
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13 Jan - 16 Feb $ 670.00
CHI
Chicago
United Airlines
DIRECT
SAT
San Antonio
SAT
San Antonio
United Airlines
DIRECT
CHI
Chicago
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Last minute flights from Chicago to San Antonio

22 Jan - 31 Jan $ 293.00
CHI
Chicago
Spirit Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Spirit Airlines
1 STOPS
CHI
Chicago
Pick dates
30 Jan - 31 Jan $ 312.00
CHI
Chicago
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
CHI
Chicago
Pick dates
19 Jan - 31 Jan $ 954.00
CHI
Chicago
United Airlines
DIRECT
SAT
San Antonio
SAT
San Antonio
United Airlines
DIRECT
CHI
Chicago
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One-way flights to San Antonio from Chicago

12:07 PM - 4:16 PM
Frontier Airlines
1 Stops
7h 26m
CHI - SAT
$ 165
Kiwi
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8:43 PM - 7:15 AM
Spirit Airlines
1 Stops
12h 57m
CHI - SAT
$ 171
Kiwi
Pick dates
8:00 PM - 8:00 PM
United Airlines
0 Stops
3h 13m
CHI - SAT
$ 389
Kiwi
Pick dates

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.