Fly from
Fly to
Route
Depart
Return
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 17/8
22:17-07:00
Nonstop5h 43m
Boston Logan Intl
Wed 19/8
16:30-00:36
1 stop11h 06m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 24/8
07:08-05:49
1 stop19h 41m
Boston Logan Intl
Tue 1/9
08:00-15:59
1 stop10h 59m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 8/8
21:00-05:44
Nonstop5h 44m
Boston Logan Intl
Fri 14/8
20:55-00:31
Nonstop6h 36m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sun 2/8
21:25-06:21
Nonstop5h 56m
Boston Logan Intl
Sun 16/8
06:00-09:30
Nonstop6h 30m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 9/7
07:10-15:55
Nonstop5h 45m
Boston Logan Intl
Mon 13/7
20:55-00:33
Nonstop6h 38m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 13/10
15:15-23:58
Nonstop5h 43m
Boston Logan Intl
Mon 19/10
21:20-00:48
Nonstop6h 28m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 18/7
22:38-09:29
1 stop7h 51m
Boston Logan Intl
Sat 25/7
18:43-00:32
1 stop8h 49m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 10/9
14:07-22:59
Nonstop5h 52m
Boston Logan Intl
Sun 13/9
07:45-11:15
Nonstop6h 30m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 22/8
23:05-12:40
2 stops10h 35m
Boston Logan Intl
Fri 28/8
18:35-00:05
1 stop8h 30m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 17/8
23:40-12:15
1 stop9h 35m
Boston Logan Intl
Wed 26/8
08:15-16:25
2 stops11h 10m
The best time to book flights from San Francisco to Boston is 71 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, January is the cheapest month in which you can book a flight from San Francisco to Boston (average of $476). Flying from San Francisco to Boston in June is currently the most expensive (average of $713). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s optimal to fly from San Francisco to Boston in the evening. By choosing this option you can save up to 46% on the cost of your flight, compared to a flight in the afternoon.
About 17% of weekly flights between San Francisco and Boston have experienced delays in the past year, with the average delay time being 174 minutes.
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Over the past year, Alaska Airlines have had the lowest number of delays on this route, with just 14% of flights being delayed.
When you search for this flight from San Francisco to Boston, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Millions of users choose and trust Cheapflights to book the best flight deals from San Francisco to Boston for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Certainly. Search results for flights to Boston from San Francisco shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Yes, Cheapflights offers price alerts on San Francisco to Boston flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.