Fly from
Fly to
Route
Depart
Return
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 2/6
17:41-05:44
1 stop9h 03m
Boston Logan Intl
Wed 3/6
08:05-17:01
1 stop11h 56m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 18/5
21:54-06:45
Nonstop5h 51m
Boston Logan Intl
Wed 27/5
20:59-00:32
Nonstop6h 33m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 3/7
22:50-10:00
1 stop8h 10m
Boston Logan Intl
Wed 8/7
16:25-22:30
1 stop9h 05m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sun 7/6
23:05-08:01
Nonstop5h 56m
Boston Logan Intl
Fri 12/6
06:00-11:25
1 stop8h 25m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Wed 8/7
19:04-06:20
1 stop8h 16m
Boston Logan Intl
Tue 14/7
16:33-23:08
1 stop9h 35m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 30/5
13:00-21:50
Nonstop5h 50m
Boston Logan Intl
Mon 8/6
20:50-00:33
Nonstop6h 43m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 10/7
08:45-23:05
1 stop11h 20m
Boston Logan Intl
Tue 14/7
15:45-23:15
2 stops10h 30m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 10/7
22:15-11:21
1 stop10h 06m
Boston Logan Intl
Mon 20/7
20:55-00:31
Nonstop6h 36m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 26/6
14:27-01:14
1 stop7h 47m
Boston Logan Intl
Sun 28/6
06:00-09:27
Nonstop6h 27m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 18/7
21:00-05:44
Nonstop5h 44m
Boston Logan Intl
Sat 25/7
07:35-11:08
Nonstop6h 33m
The best time to book flights from San Francisco to Boston is 90 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 $465). Flying from San Francisco to Boston in April is currently the most expensive (average of $649). 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 16% of weekly flights between San Francisco and Boston have experienced delays in the past year, with the average delay time being 176 minutes.
Historically, flights departing at night 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 12% 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.