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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 January , February 2026

30 Jan - 05 Feb $ 207.00
BOS
Boston
United Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
United Airlines
DIRECT
BOS
Boston
Pick dates
20 Jan - 03 Feb $ 323.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Hawaiian Airlines
1 STOPS
BOS
Boston
Pick dates
12 Jan - 12 Feb $ 573.00
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

31 Jan - 31 Jan $ 307.00
BOS
Boston
United Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
United Airlines
DIRECT
BOS
Boston
Pick dates
21 Jan - 31 Jan $ 369.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Hawaiian Airlines
1 STOPS
BOS
Boston
Pick dates
18 Jan - 31 Jan $ 447.00
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

5:57 PM - 5:57 PM
United Airlines
0 Stops
6h 53m
BOS - SFO
$ 144
Kiwi
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4:20 PM - 8:59 PM
Alaska Airlines
1 Stops
9h 27m
BOS - SFO
$ 214
Kiwi
Pick dates
7:55 AM - 7:55 AM
United Airlines
0 Stops
6h 53m
BOS - SFO
$ 253
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.