Earn point on your loyalty program!arrow arc left

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

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 San Francisco (SFO) to Boston (BOS)

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

Cheap flights from San Francisco to Boston in December 2025 , January 2026

28 Dec - 04 Jan $ 325.00
SFO
San Francisco
Hawaiian Airlines
DIRECT
BOS
Boston
BOS
Boston
Hawaiian Airlines
1 STOPS
SFO
San Francisco
Pick dates
17 Dec - 07 Jan $ 388.00
SFO
San Francisco
Alaska Airlines
DIRECT
BOS
Boston
BOS
Boston
Alaska Airlines
1 STOPS
SFO
San Francisco
Pick dates
17 Dec - 06 Jan $ 463.00
SFO
San Francisco
Alaska Airlines
DIRECT
BOS
Boston
BOS
Boston
Alaska Airlines
DIRECT
SFO
San Francisco
Pick dates

Last minute flights from San Francisco to Boston

24 Dec - 31 Dec $ 446.00
SFO
San Francisco
Hawaiian Airlines
1 STOPS
BOS
Boston
BOS
Boston
Hawaiian Airlines
1 STOPS
SFO
San Francisco
Pick dates
17 Dec - 31 Dec $ 736.00
SFO
San Francisco
Alaska Airlines
DIRECT
BOS
Boston
BOS
Boston
Alaska Airlines
DIRECT
SFO
San Francisco
Pick dates
17 Dec - 31 Dec $ 738.00
SFO
San Francisco
Hawaiian Airlines
DIRECT
BOS
Boston
BOS
Boston
Hawaiian Airlines
DIRECT
SFO
San Francisco
Pick dates

One-way flights to Boston from San Francisco

7:25 AM - 7:25 AM
Hawaiian Airlines
0 Stops
5h 47m
SFO - BOS
$ 237
Kiwi
Pick dates
7:00 AM - 7:00 AM
Alaska Airlines
0 Stops
5h 37m
SFO - BOS
$ 267
Kiwi
Pick dates
7:00 AM - 7:00 AM
Hawaiian Airlines
0 Stops
5h 37m
SFO - BOS
$ 284
Kiwi
Pick dates

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

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 San Francisco (SFO) to Boston (BOS)
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 San Francisco (SFO) to Boston (BOS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.