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Cheap flights from Boston (BOS) to San Francisco (SFO)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
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How to find the cheapest flight from Boston (BOS) to San Francisco (SFO)

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

31 Dec - 07 Jan $ 290.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Hawaiian Airlines
1 STOPS
BOS
Boston
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18 Dec - 20 Jan $ 508.00
BOS
Boston
United Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
United Airlines
DIRECT
BOS
Boston
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18 Dec - 20 Jan $ 908.00
BOS
Boston
United Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
United Airlines
DIRECT
BOS
Boston
Pick dates

Last minute flights from Boston to San Francisco

24 Dec - 31 Dec $ 449.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Hawaiian Airlines
DIRECT
BOS
Boston
Pick dates
19 Dec - 31 Dec $ 619.00
BOS
Boston
Hawaiian Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
Hawaiian Airlines
DIRECT
BOS
Boston
Pick dates
22 Dec - 31 Dec $ 908.00
BOS
Boston
United Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
United Airlines
DIRECT
BOS
Boston
Pick dates

One-way flights to San Francisco from Boston

7:23 PM - 7:23 PM
Hawaiian Airlines
0 Stops
6h 47m
BOS - SFO
$ 315
Kiwi
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7:23 PM - 7:23 PM
Alaska Airlines
0 Stops
6h 47m
BOS - SFO
$ 320
Kiwi
Pick dates
7:23 PM - 7:23 PM
Alaska Airlines
0 Stops
6h 47m
BOS - SFO
$ 369
Kiwi
Pick dates

How to find the cheapest flight from Boston (BOS) to San Francisco (SFO)

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