Flights from Boston to San Francisco

Our cheapest offers for flights from Boston to San Francisco

Here you can compare cheap flights from Boston (BOS) to San Francisco (SFO) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to San Francisco. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Boston
San Francisco
Outbound
06/20/25
1 Stopover (MSP)
SY0252, SY0397
14h 16min
Return
07/19/25
direct
AS0307
05h 41min
Sun Country Airlines ?
$320
Best option
Boston
San Francisco
Outbound
06/20/25
direct
AS0356
06h 52min
Return
07/19/25
direct
AS0307
05h 41min
Alaska Airlines ?
$344
Boston
San Francisco
Outbound
06/20/25
direct
AS0356
06h 52min
Return
07/19/25
direct
AS0307
05h 41min
Alaska Airlines
$349
Boston
San Francisco
Outbound
04/12/25
direct
B60333
06h 45min
Return
04/27/25
1 Stopover (ATL)
F91448, F93512
09h 10min
JetBlue Airways ?
$357
found yesterday
Boston
San Francisco
Outbound
06/10/25
direct
B60333
06h 45min
Return
06/29/25
direct
B60134
05h 38min
JetBlue Airways ?
$366
Boston
San Francisco
Outbound
06/20/25
direct
AS0308
06h 52min
Return
07/19/25
direct
AS0307
05h 41min
Alaska Airlines
$366
Boston
San Francisco
Outbound
04/21/25
3 Stopovers (MIA, ATL, MCO)
AA1397, AA0659, F94556, F91645
46h 46min
Return
05/19/25
2 Stopovers (DEN, MCO)
F93440, F93312, F93348
24h 54min
American Airlines, Frontier Airlines ?
$372
Boston
San Francisco
Outbound
04/12/25
1 Stopover (ATL)
F93511, F91447
20h 09min
Return
04/27/25
2 Stopovers (SEA, ATL)
AS1025, AS1480, F93512
25h 48min
Frontier Airlines ?
$386
found yesterday
Boston
San Francisco
Outbound
06/10/25
direct
AS0548
06h 45min
Return
06/29/25
direct
AS0307
05h 41min
Alaska Airlines ?
$388
Boston
San Francisco
Outbound
04/21/25
1 Stopover (MSP)
SY0252, SY0395
08h 42min
Return
05/19/25
direct
AS0547
05h 53min
Sun Country Airlines
$388
Prices based on recent searches, subject to last-minute changes
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Important flight information

Flight information: Boston - San Francisco

Roundtrip from $ 319,23
Flight duration min. 06:48 / max. 10:14
Return flight duration min. 05:26/ max. 05:48
Distance 4346 km
Flights per week 108
Departure airport Airport Boston Logan International Airport, MA (BOS)
Arrival airport Airport San Francisco International Airport, CA (SFO)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to San Francisco
Flight destinations with a similar price
Flight destinations with a similar price