Find Deals on Flights from Boston Logan International to San Francisco (BOS - SFO)

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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Book cheap flights from Boston Logan International to San Francisco

(Round-trip)
Depart: Wed Sep 14 2016 Return: Mon Sep 19 2016 Trip spans 6 days
Depart: Mon Oct 31 2016 Return: Thu Nov 3 2016 Trip spans 4 days
Depart: Wed Nov 9 2016 Return: Tue Nov 15 2016 Trip spans 7 days
Depart: Thu Dec 1 2016 Return: Tue Dec 6 2016 Trip spans 6 days
Depart: Wed Oct 19 2016 Return: Sat Oct 29 2016 Trip spans 11 days
Depart: Sun Nov 20 2016 Return: Thu Nov 24 2016 Trip spans 5 days
Depart: Sat Nov 19 2016 Return: Mon Nov 21 2016 Trip spans 3 days
Depart: Sat Dec 3 2016 Return: Wed Dec 7 2016 Trip spans 5 days
Depart: Wed Sep 7 2016 Return: Mon Sep 12 2016 Trip spans 6 days
Depart: Sat Oct 22 2016 Return: Fri Oct 28 2016 Trip spans 7 days
Depart: Wed Feb 15 2017 Return: Fri Feb 17 2017 Trip spans 3 days
Depart: Sat Jan 21 2017 Return: Thu Jan 26 2017 Trip spans 6 days
Depart: Thu Oct 27 2016 Return: Tue Nov 1 2016 Trip spans 6 days
Depart: Wed Oct 19 2016 Return: Mon Oct 24 2016 Trip spans 6 days
Depart: Thu Feb 2 2017 Return: Sun Feb 5 2017 Trip spans 4 days
Depart: Thu Oct 13 2016 Return: Sat Oct 15 2016 Trip spans 3 days
Depart: Fri Sep 9 2016 Return: Mon Sep 19 2016 Trip spans 11 days
Depart: Sat Oct 29 2016 Return: Fri Nov 4 2016 Trip spans 7 days
Depart: Tue Nov 8 2016 Return: Sun Nov 13 2016 Trip spans 6 days
Depart: Thu Feb 23 2017 Return: Tue Mar 7 2017 Trip spans 13 days
Direct flights BOS to SFO on United
Flight # Depart BOS Arrive SFO Sun Mon Tue Wed Thu Fri Sat Valid Between
433 6:00 am 9:32 am Sep 9 - Sep 9
433 6:00 am 9:36 am Sep 10 - Sep 10
433 6:00 am 9:38 am Sep 7 - Sep 7
433 6:00 am 9:32 am Sep 17 - Oct 1
433 6:00 am 9:32 am Sep 26 - Oct 3
433 6:00 am 9:38 am Sep 19 - Sep 19
433 6:00 am 9:32 am Sep 16 - Sep 30
433 6:00 am 9:32 am Sep 11 - Oct 2
433 6:00 am 9:32 am Sep 13 - Oct 4
433 6:00 am 9:32 am Sep 12 - Sep 12
433 6:00 am 9:32 am Sep 8 - Sep 15
452 6:00 am 9:36 am Sep 6 - Sep 6
452 6:00 am 9:36 am Sep 4 - Sep 4
452 6:00 am 9:36 am Sep 3 - Sep 3
452 6:00 am 9:30 am Sep 5 - Sep 5
1649 7:00 am 10:38 am Oct 3 - Oct 3
1649 7:10 am 10:48 am Sep 19 - Sep 19
1649 7:20 am 11:03 am Sep 7 - Sep 16
1649 7:20 am 11:03 am Sep 8 - Sep 29
1649 7:20 am 11:03 am Sep 11 - Sep 11
1649 7:20 am 11:03 am Sep 25 - Oct 2
1649 7:20 am 11:03 am Sep 20 - Sep 30
1649 7:20 am 11:03 am Oct 4 - Oct 4
1649 7:25 am 11:07 am Sep 6 - Sep 6
1649 7:25 am 11:07 am Sep 5 - Sep 5
1649 7:30 am 11:15 am Sep 18 - Sep 18
207 8:00 am 11:37 am Sep 8 - Oct 4
207 8:00 am 11:37 am Sep 30 - Sep 30
207 8:00 am 11:37 am Sep 10 - Oct 1
207 8:00 am 11:43 am Sep 14 - Sep 21
207 8:00 am 11:43 am Sep 7 - Sep 7
207 8:00 am 11:37 am Sep 18 - Oct 2
207 8:00 am 11:37 am Sep 9 - Sep 23
207 8:00 am 11:37 am Sep 11 - Sep 11
207 8:00 am 11:43 am Sep 28 - Sep 28
1454 8:10 am 11:28 am Sep 6 - Sep 6
207 8:10 am 11:36 am Sep 5 - Sep 5
207 8:15 am 11:41 am Sep 12 - Oct 3
1454 8:25 am 11:51 am Sep 4 - Sep 4
1930 8:51 am 12:25 pm Aug 29 - Sep 5
1930 8:51 am 12:25 pm Sep 6 - Sep 6
1930 8:53 am 12:27 pm Sep 3 - Sep 3
647 9:00 am 12:27 pm Sep 22 - Sep 22
647 9:00 am 12:32 pm Sep 7 - Sep 21
647 9:00 am 12:32 pm Sep 23 - Oct 5
647 9:00 am 12:32 pm Sep 11 - Oct 2
1930 9:50 am 1:24 pm Sep 10 - Oct 1
1930 9:50 am 1:24 pm Sep 8 - Oct 5
1930 9:50 am 1:18 pm Sep 7 - Sep 7
477 11:01 am 2:35 pm Oct 4 - Oct 4
477 11:10 am 2:44 pm Oct 3 - Oct 3
477 11:10 am 2:44 pm Oct 1 - Oct 2
477 11:10 am 2:44 pm Sep 23 - Sep 30
477 11:10 am 2:44 pm Sep 20 - Sep 29
477 11:10 am 2:44 pm Sep 15 - Sep 19
477 11:10 am 2:44 pm Sep 11 - Sep 25
477 11:10 am 2:44 pm Sep 7 - Sep 16
477 11:10 am 2:44 pm Sep 5 - Sep 5
477 11:10 am 2:44 pm Sep 3 - Sep 10
477 11:15 am 2:49 pm Sep 4 - Sep 4
477 11:20 am 2:54 pm Sep 2 - Sep 6
1572 3:50 pm 7:23 pm Sep 4 - Sep 4
1572 3:50 pm 7:19 pm Oct 3 - Oct 5
1572 3:50 pm 7:23 pm Sep 5 - Sep 5
1572 3:50 pm 7:19 pm Sep 7 - Sep 30
1572 3:50 pm 7:23 pm Sep 6 - Sep 6
1572 4:00 pm 7:33 pm Sep 3 - Sep 3
1572 4:55 pm 8:24 pm Oct 2 - Oct 2
366 5:31 pm 8:53 pm Sep 5 - Sep 5
576 6:10 pm 9:29 pm Oct 3 - Oct 5
576 6:10 pm 9:37 pm Sep 10 - Oct 1
576 6:10 pm 9:29 pm Sep 7 - Sep 27
576 6:10 pm 9:37 pm Oct 2 - Oct 2
576 6:15 pm 9:29 pm Aug 25 - Sep 5
576 6:19 pm 9:46 pm Sep 30 - Sep 30
576 6:25 pm 9:39 pm Aug 28 - Sep 4
576 6:28 pm 9:55 pm Sep 28 - Sep 29
576 6:35 pm 9:55 pm Sep 6 - Sep 6
366 7:35 pm 11:08 pm Sep 6 - Sep 6
1616 8:30 pm 12:03 am Sep 5 - Sep 5
* 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.

We compile tonnes of data for you
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.

If you have more questions or if you have a bad price to report to us,
please send us an email and someone from our team will get back to you promptly.

^ 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
$292
Destination

San Francisco
$292
Airlines Airline reviews

220 travelers who booked a flight from Boston to San Francisco rated their chosen airlines with an average of 7.3.

Overall
7.4
Boarding
7.8
Crew
8.0
Comfort
7.1
Food
6.1
Entertainment
6.8