Save time at SFO by using the AirTrain Red Line to quickly navigate between terminals after clearing security.
Round-trip from | $258 (Trip.com) |
---|---|
One-way from | $132 (Alaska Airlines) |
Popular in | December |
Cheapest in | January |
Average price | $447 |
Good round-trip deal | $332 or less |
Good one-way deal | $180 or less |
Fly from
Fly to
Route
Depart
Return
Price
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 7/8
5:51 pm-7:30 am
1 stop10h 39m
Boston Logan Intl
Tue 7/15
8:19 pm-11:59 pm
Nonstop6h 40m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 7/7
9:28 pm-6:10 am
Nonstop5h 42m
Boston Logan Intl
Tue 7/15
8:19 pm-11:59 pm
Nonstop6h 40m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 8/19
10:10 pm-6:48 am
Nonstop5h 38m
Boston Logan Intl
Mon 8/25
7:40 pm-1:44 am
1 stop9h 04m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sun 7/13
10:00 pm-6:40 am
Nonstop5h 40m
Boston Logan Intl
Wed 7/23
8:47 pm-12:34 am
Nonstop6h 47m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Mon 8/25
5:15 pm-8:10 am
2 stops11h 55m
Boston Logan Intl
Fri 8/29
6:40 am-1:20 pm
1 stop9h 40m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 8/21
6:42 pm-6:13 am
1 stop8h 31m
Boston Logan Intl
Tue 9/9
5:36 pm-11:33 pm
1 stop8h 57m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 7/3
11:30 pm-8:18 am
Nonstop5h 48m
Boston Logan Intl
Tue 7/8
6:00 am-9:28 am
Nonstop6h 28m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Fri 7/18
11:59 pm-10:37 am
1 stop7h 38m
Boston Logan Intl
Mon 7/21
6:30 am-10:53 pm
1 stop19h 23m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 7/8
5:51 pm-7:30 am
1 stop10h 39m
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Wed 8/13
5:25 pm-8:10 am
2 stops11h 45m
The best time to book flights from San Francisco to Boston is 64 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 $218). Flying from San Francisco to Boston in June is currently the most expensive (average of $306). 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 typically best to fly out from San Francisco to Boston in the afternoon. Doing so could potentially save you 20% on the flight price compared to flying in the morning, which is usually more expensive.
Travelers seeking maximum savings on their San Francisco to Boston flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from SFO to BOS are scheduled on a Thursday (63 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).
In terms of precipitation, rainfall in Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.
If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
James,Apr 2025
LAX - SFO
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$110 | Average$200 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$134 | Average$387 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$144 | Average$364 | FlexibilityNo cancel fee | On-time85% | |
Cheapest$160 | Average$373 | FlexibilityNo cancel fee | On-time83% | |
Cheapest$163 | Average$371 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$195 | Average$367 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$227 | Average$449 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$228 | Average$418 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$288 | Average$472 | FlexibilityNo cancel fee | On-time63% |