Earn point on your loyalty program!arrow arc left

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

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

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)
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.
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.

Cheap flights from Boston to San Francisco in February , March 2026

24 Feb - 03 Mar $ 217.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Hawaiian Airlines
1 STOPS
BOS
Boston
Pick dates
11 Feb - 04 Mar $ 316.00
BOS
Boston
Alaska Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
1 STOPS
BOS
Boston
Pick dates
12 Feb - 04 Mar $ 1,118.00
BOS
Boston
Alaska Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
1 STOPS
BOS
Boston
Pick dates

Last minute flights from Boston to San Francisco

23 Feb - 28 Feb $ 257.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Hawaiian Airlines
1 STOPS
BOS
Boston
Pick dates
11 Feb - 28 Feb $ 360.00
BOS
Boston
Hawaiian Airlines
1 STOPS
SFO
San Francisco
SFO
San Francisco
Hawaiian Airlines
1 STOPS
BOS
Boston
Pick dates
10 Feb - 28 Feb $ 716.00
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

5:50 PM - 5:50 PM
United Airlines
0 Stops
7h
BOS - SFO
$ 130
Kiwi
Pick dates
7:00 AM - 11:43 AM
Alaska Airlines
1 Stops
10h
BOS - SFO
$ 203
Kiwi
Pick dates
1:50 PM - 1:50 PM
United Airlines
0 Stops
6h 52m
BOS - SFO
$ 528
Kiwi
Pick dates

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

Related info for your journey
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.
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.