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Cheap flights from Chicago (CHI) to San Francisco (SFO)

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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 Francisco (SFO)

How to find the cheapest flight from Chicago (CHI) to San Francisco (SFO)
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How to find the cheapest flight from Chicago (CHI) to San Francisco (SFO)
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How to find the cheapest flight from Chicago (CHI) to San Francisco (SFO)
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Cheap flights from Chicago to San Francisco in December 2025 , January 2026

24 Dec - 08 Jan $ 259.00
CHI
Chicago
Frontier Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Frontier Airlines
1 STOPS
CHI
Chicago
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19 Dec - 15 Jan $ 267.00
CHI
Chicago
Frontier Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Frontier Airlines
1 STOPS
CHI
Chicago
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20 Dec - 04 Jan $ 713.00
CHI
Chicago
Frontier Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Frontier Airlines
1 STOPS
CHI
Chicago
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Last minute flights from Chicago to San Francisco

24 Dec - 31 Dec $ 398.00
CHI
Chicago
United Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
United Airlines
DIRECT
CHI
Chicago
Pick dates
24 Dec - 31 Dec $ 398.00
CHI
Chicago
United Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
United Airlines
DIRECT
CHI
Chicago
Pick dates
17 Dec - 31 Dec $ 628.00
CHI
Chicago
United Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
United Airlines
DIRECT
CHI
Chicago
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One-way flights to San Francisco from Chicago

7:00 AM - 10:29 PM
Frontier Airlines
1 Stops
19h 24m
CHI - SFO
$ 168
Kiwi
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6:00 AM - 10:30 AM
Frontier Airlines
1 Stops
9h 13m
CHI - SFO
$ 176
Kiwi
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6:55 AM - 6:55 AM
United Airlines
0 Stops
4h 45m
CHI - SFO
$ 929
Kiwi
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How to find the cheapest flight from Chicago (CHI) to San Francisco (SFO)

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