Earn point on your loyalty program!arrow arc left

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

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

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)
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.
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.

Cheap flights from Chicago to San Antonio in April , May 2026

28 Apr - 05 May $ 387.00
CHI
Chicago
United Airlines
DIRECT
SAT
San Antonio
SAT
San Antonio
United Airlines
DIRECT
CHI
Chicago
Pick dates
10 Apr - 02 May $ 818.00
CHI
Chicago
Spirit Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Spirit Airlines
1 STOPS
CHI
Chicago
Pick dates
10 Apr - 02 May $ 834.00
CHI
Chicago
Spirit Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Spirit Airlines
1 STOPS
CHI
Chicago
Pick dates

Last minute flights from Chicago to San Antonio

28 Apr - 30 Apr $ 393.00
CHI
Chicago
United Airlines
DIRECT
SAT
San Antonio
SAT
San Antonio
United Airlines
DIRECT
CHI
Chicago
Pick dates
10 Apr - 30 Apr $ 818.00
CHI
Chicago
Spirit Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Spirit Airlines
1 STOPS
CHI
Chicago
Pick dates
10 Apr - 30 Apr $ 834.00
CHI
Chicago
Spirit Airlines
1 STOPS
SAT
San Antonio
SAT
San Antonio
Spirit Airlines
1 STOPS
CHI
Chicago
Pick dates

One-way flights to San Antonio from Chicago

7:50 PM - 7:50 PM
United Airlines
0 Stops
3h 8m
CHI - SAT
$ 149
Kiwi
Pick dates
7:59 PM - 7:59 PM
United Airlines
0 Stops
3h 8m
CHI - SAT
$ 412
Kiwi
Pick dates
3:51 PM - 3:51 PM
United Airlines
0 Stops
3h 8m
CHI - SAT
$ 412
Kiwi
Pick dates

How to find the cheapest flight from Chicago (CHI) to San Antonio (SAT)

Related info for your journey
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.
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.