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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 April , May 2025

24 Apr - 10 May $ 243.00
BOS
Boston
Alaska Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
DIRECT
BOS
Boston
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26 Apr - 10 May $ 250.00
BOS
Boston
Alaska Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
DIRECT
BOS
Boston
Pick dates
18 Apr - 14 May $ 583.00
BOS
Boston
Alaska Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
DIRECT
BOS
Boston
Pick dates

Last minute flights from Boston to San Francisco

24 Apr - 30 Apr $ 380.00
BOS
Boston
Alaska Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
DIRECT
BOS
Boston
Pick dates
26 Apr - 30 Apr $ 384.00
BOS
Boston
Alaska Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
DIRECT
BOS
Boston
Pick dates
26 Apr - 30 Apr $ 787.00
BOS
Boston
Hawaiian Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
Hawaiian Airlines
DIRECT
BOS
Boston
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One-way flights to San Francisco from Boston

12:29 PM - 8:59 PM
Frontier Airlines
1 Stops
13h 39m
BOS - SFO
$ 115
Kiwi
Pick dates
12:48 PM - 7:48 PM
Frontier Airlines
1 Stops
12h 43m
BOS - SFO
$ 124
Kiwi
Pick dates
6:00 AM - 6:00 AM
United Airlines
0 Stops
6h 40m
BOS - SFO
$ 312
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.