Fly from
Fly to
Route
Depart
Return
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 9/6
2:23 p.m.-5:44 a.m.
1 stop12h 21m
Boston Logan Intl
Mon 15/6
7:44 p.m.-9:20 a.m.
1 stop16h 36m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 11/5
3:20 p.m.-12:08 a.m.
Nonstop5h 48m
Boston Logan Intl
Wed 13/5
6:20 a.m.-10:05 a.m.
Nonstop6h 45m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 17/7
7:00 a.m.-3:54 p.m.
Nonstop5h 54m
Boston Logan Intl
Tue 21/7
5:45 a.m.-11:20 a.m.
1 stop8h 35m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 21/5
9:25 p.m.-6:21 a.m.
Nonstop5h 56m
Boston Logan Intl
Sat 30/5
6:00 a.m.-9:27 a.m.
Nonstop6h 27m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 21/8
7:45 p.m.-9:55 a.m.
2 stops11h 10m
Boston Logan Intl
Mon 24/8
7:40 a.m.-1:00 p.m.
1 stop8h 20m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 20/6
7:00 a.m.-3:54 p.m.
Nonstop5h 54m
Boston Logan Intl
Sat 11/7
6:45 p.m.-12:32 a.m.
1 stop8h 47m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 24/8
7:45 p.m.-9:30 a.m.
2 stops10h 45m
Boston Logan Intl
Sat 29/8
7:05 a.m.-2:45 p.m.
2 stops10h 40m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 15/5
7:40 a.m.-6:20 a.m.
1 stop19h 40m
Boston Logan Intl
Sat 23/5
6:00 a.m.-12:41 p.m.
1 stop9h 41m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 30/4
4:15 p.m.-1:10 a.m.
Nonstop5h 55m
Boston Logan Intl
Wed 6/5
11:25 a.m.-3:08 p.m.
Nonstop6h 43m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 9/5
10:17 a.m.-7:07 p.m.
Nonstop5h 50m
Boston Logan Intl
Sat 16/5
6:00 a.m.-9:43 a.m.
Nonstop6h 43m
Booking 72 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, January is the cheapest month in which you can book a flight from San Francisco to Boston (average of C$ 461). Flying from San Francisco to Boston in December is currently the most expensive (average of C$ 639). 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.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 77% on flights from San Francisco to Boston by exploring options for tickets in the evening.
About 16% of weekly flights between San Francisco and Boston have experienced delays in the past year, with the average delay time being 175 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 Monday has historically faced a higher average of delays compared to other days of the week.
Over the past year, Alaska Airlines has had the lowest number of delays on this route, with just 12% of flights being delayed.
Deals for San Francisco to Boston flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Francisco to Boston for you. Better yet — we are completely free to use.
Yes, we can. To see specific flights from San Francisco to Boston with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Of course! You can now track prices for flights from San Francisco to Boston and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.