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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 July , August 2026

30 Jul - 09 Aug $ 423.00
BOS
Boston
Frontier Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Frontier Airlines
1 STOPS
BOS
Boston
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30 Jul - 18 Aug $ 427.00
BOS
Boston
JetBlue Airways
1 STOPS
SFO
San Francisco
SFO
San Francisco
JetBlue Airways
DIRECT
BOS
Boston
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28 Jul - 10 Aug $ 594.00
BOS
Boston
JetBlue Airways
DIRECT
SFO
San Francisco
SFO
San Francisco
JetBlue Airways
DIRECT
BOS
Boston
Pick dates

Last minute flights from Boston to San Francisco

28 Jul - 31 Jul $ 554.00
BOS
Boston
Alaska Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
1 STOPS
BOS
Boston
Pick dates
28 Jul - 31 Jul $ 561.00
BOS
Boston
Alaska Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
1 STOPS
BOS
Boston
Pick dates
31 Jul - 31 Jul $ 770.00
BOS
Boston
JetBlue Airways
DIRECT
SFO
San Francisco
SFO
San Francisco
JetBlue Airways
DIRECT
BOS
Boston
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One-way flights to San Francisco from Boston

11:52 AM - 4:55 PM
Frontier Airlines
1 Stops
10h 26m
BOS - SFO
$ 243
Kiwi
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6:03 AM - 10:42 AM
Alaska Airlines
1 Stops
9h 36m
BOS - SFO
$ 257
Kiwi
Pick dates
6:00 AM - 6:00 AM
United Airlines
0 Stops
6h 27m
BOS - SFO
$ 364
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.