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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 April , May 2026

16 Apr - 02 May $ 360.00
CHI
Chicago
Spirit Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Spirit Airlines
1 STOPS
CHI
Chicago
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29 Apr - 13 May $ 387.00
CHI
Chicago
United Airlines
DIRECT
SAT
San Antonio
SAT
San Antonio
United Airlines
DIRECT
CHI
Chicago
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16 Apr - 01 May $ 389.00
CHI
Chicago
Spirit Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Spirit Airlines
1 STOPS
CHI
Chicago
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Last minute flights from Chicago to San Antonio

16 Apr - 30 Apr $ 400.00
CHI
Chicago
Spirit Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Spirit Airlines
1 STOPS
CHI
Chicago
Pick dates
29 Apr - 30 Apr $ 413.00
CHI
Chicago
United Airlines
DIRECT
SAT
San Antonio
SAT
San Antonio
United Airlines
DIRECT
CHI
Chicago
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16 Apr - 01 May $ 778.00
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

7:50 PM - 7:50 PM
United Airlines
0 Stops
3h 8m
CHI - SAT
$ 149
Kiwi
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6:40 AM - 11:19 AM
Spirit Airlines
1 Stops
6h 37m
CHI - SAT
$ 220
Kiwi
Pick dates
7:50 PM - 7:50 PM
United Airlines
0 Stops
3h 8m
CHI - SAT
$ 422
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.