Find Cheap Flights to San Francisco

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Boston Logan International to San Francisco

(Round-trip)
Depart: Thu Sep 7 2017 Return: Fri Sep 8 2017 Trip spans 2 days
JetBlue
JetBlue
BOS
SFO
6h 31m
nonstop
SFO
BOS
5h 42m
nonstop
Depart: Fri Sep 15 2017 Return: Thu Sep 28 2017 Trip spans 14 days
Sun Country Air
Sun Country Air
BOS
SFO
8h 10m
1 stop
SFO
BOS
7h 30m
1 stop
Depart: Tue Oct 17 2017 Return: Tue Oct 24 2017 Trip spans 8 days
Virgin America
Virgin America
BOS
SFO
6h 43m
nonstop
SFO
BOS
5h 40m
nonstop
Depart: Wed Sep 20 2017 Return: Sun Sep 24 2017 Trip spans 5 days
United
United
BOS
SFO
6h 23m
nonstop
SFO
BOS
5h 40m
nonstop
Depart: Thu Jan 11 2018 Return: Thu Jan 18 2018 Trip spans 8 days
Delta
Delta
BOS
SFO
7h 05m
nonstop
SFO
BOS
5h 55m
nonstop
Depart: Wed Sep 27 2017 Return: Tue Oct 3 2017 Trip spans 7 days
JetBlue
JetBlue
BOS
SFO
6h 43m
nonstop
SFO
BOS
5h 42m
nonstop
Depart: Sat Dec 23 2017 Return: Sat Dec 30 2017 Trip spans 8 days
Alaska Airlines
Alaska Airlines
BOS
SFO
6h 59m
nonstop
SFO
BOS
5h 32m
nonstop
Depart: Mon Oct 2 2017 Return: Tue Oct 10 2017 Trip spans 9 days
JetBlue
JetBlue
BOS
SFO
6h 31m
nonstop
SFO
BOS
5h 38m
nonstop
Depart: Tue Oct 10 2017 Return: Tue Oct 17 2017 Trip spans 8 days
JetBlue
JetBlue
BOS
SFO
6h 31m
nonstop
SFO
BOS
5h 42m
nonstop
Depart: Wed Oct 25 2017 Return: Mon Oct 30 2017 Trip spans 6 days
Sun Country Air
Sun Country Air
BOS
SFO
8h 05m
1 stop
SFO
BOS
7h 30m
1 stop
Depart: Thu Nov 2 2017 Return: Sun Nov 5 2017 Trip spans 4 days
JetBlue
JetBlue
BOS
SFO
6h 51m
nonstop
SFO
BOS
5h 28m
nonstop
Depart: Fri Nov 3 2017 Return: Mon Nov 6 2017 Trip spans 4 days
Sun Country Air
Sun Country Air
BOS
SFO
8h 15m
1 stop
SFO
BOS
7h 30m
1 stop
Depart: Fri Feb 23 2018 Return: Sat Mar 3 2018 Trip spans 9 days
Virgin America
Virgin America
BOS
SFO
6h 52m
nonstop
SFO
BOS
5h 27m
nonstop
Depart: Mon Nov 6 2017 Return: Sat Nov 11 2017 Trip spans 6 days
JetBlue
JetBlue
BOS
SFO
6h 38m
nonstop
SFO
BOS
5h 28m
nonstop
Depart: Fri Nov 17 2017 Return: Mon Nov 27 2017 Trip spans 11 days
Delta
Delta
BOS
SFO
6h 40m
nonstop
SFO
BOS
9h 10m
1 stop
Depart: Tue Feb 27 2018 Return: Tue Mar 13 2018 Trip spans 14 days
Virgin America
Virgin America
BOS
SFO
6h 43m
nonstop
SFO
BOS
5h 30m
nonstop
Depart: Thu Feb 15 2018 Return: Sat Feb 24 2018 Trip spans 10 days
Delta
Delta
BOS
SFO
7h 05m
nonstop
SFO
BOS
7h 57m
1 stop
Depart: Wed Nov 15 2017 Return: Sun Nov 19 2017 Trip spans 5 days
Virgin America
Virgin America
BOS
SFO
6h 42m
nonstop
SFO
BOS
5h 40m
nonstop
Depart: Tue Aug 29 2017 Return: Tue Sep 5 2017 Trip spans 8 days
Sun Country Air
Sun Country Air
BOS
SFO
8h 25m
1 stop
SFO
BOS
14h 10m
1 stop
Depart: Thu Aug 31 2017 Return: Wed Sep 6 2017 Trip spans 7 days
JetBlue
JetBlue
BOS
SFO
6h 38m
nonstop
SFO
BOS
5h 42m
nonstop
Direct flights BOS to SFO on Delta
Flight # Depart BOS Arrive SFO Sun Mon Tue Wed Thu Fri Sat Valid Between
2488 7:00 am 10:33 am Aug 26 - Sep 30
2488 7:00 am 10:38 am Aug 27 - Sep 1
2488 7:00 am 10:35 am Sep 4 - Sep 4
2488 7:00 am 10:38 am Sep 5 - Sep 20
2488 7:00 am 10:35 am Sep 21 - Sep 22
2488 7:00 am 10:38 am Sep 24 - Sep 29
2488 9:00 am 12:40 pm Sep 3 - Sep 3
2566 4:00 pm 7:36 pm Aug 31 - Sep 1
2566 4:00 pm 7:36 pm Sep 11 - Sep 29
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

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^ The fares displayed in KAYAK ads found on other sites include all taxes and fees for economy class travel and were found by KAYAK users in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
Airports
Origin

Boston
$237
Destination

San Francisco
$237
Airlines Airline reviews

406 travelers who booked a flight from Boston to San Francisco rated their chosen airlines with an average of 7.2.

Overall
7.3
Boarding
7.5
Crew
8.0
Comfort
7.1
Food
6.0
Entertainment
6.7