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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 July , August 2026

29 Jul - 10 Aug $ 354.00
CHI
Chicago
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
CHI
Chicago
Pick dates
25 Jul - 27 Aug $ 496.00
CHI
Chicago
United Airlines
DIRECT
SAT
San Antonio
SAT
San Antonio
United Airlines
DIRECT
CHI
Chicago
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29 Jul - 10 Aug $ 899.00
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 Jul - 01 Aug $ 388.00
CHI
Chicago
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
CHI
Chicago
Pick dates
30 Jul - 31 Jul $ 431.00
CHI
Chicago
Frontier Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Frontier Airlines
1 STOPS
CHI
Chicago
Pick dates
29 Jul - 31 Jul $ 633.00
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

5:13 PM - 7:00 AM
Frontier Airlines
1 Stops
15h 43m
CHI - SAT
$ 193
Kiwi
Pick dates
7:58 PM - 7:58 PM
United Airlines
0 Stops
2h 59m
CHI - SAT
$ 258
Kiwi
Pick dates
7:58 PM - 7:58 PM
United Airlines
0 Stops
2h 59m
CHI - SAT
$ 258
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.