Cheap flights from Boston to San Francisco

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Easily compare round-trip flights from Boston to San Francisco

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Boston to San Francisco by changing tabs
Quickest
Cheapest
Major Airline
Major Airline
27 Sep
BOS
1:15 pm
Boston Logan Intl airport
6h 40m
4:55 pm
SFO
San Francisco airport
Major Airline
28 Sep
SFO
9:10 am
San Francisco airport
5h 38m
5:48 pm
BOS
Boston Logan Intl airport
217 USD
Major Airline
Major Airline
04 Nov
BOS
3:16 pm
Boston Logan Intl airport
6h 43m
6:59 pm
SFO
San Francisco airport
Major Airline
12 Nov
SFO
11:20 pm
San Francisco airport
5h 40m
8:00 am
+1
BOS
Boston Logan Intl airport
217 USD
Major Airline
Major Airline
19 Oct
BOS
12:11 pm
Boston Logan Intl airport
9h 51m
1 Stop
7:02 pm
SFO
San Francisco airport
Major Airline
23 Oct
SFO
12:20 am
San Francisco airport
5h 45m
9:05 am
BOS
Boston Logan Intl airport
224 USD
United Airlines
United Airlines
28 Sep
BOS
2:00 am
Boston Logan Intl airport
6h 35m
5:35 am
SFO
San Francisco airport
United Airlines
29 Sep
SFO
1:35 pm
San Francisco airport
5h 33m
10:08 pm
BOS
Boston Logan Intl airport
237 USD
Delta
Delta
12 Sep
BOS
3:40 am
Boston Logan Intl airport
6h 36m
7:16 am
SFO
San Francisco airport
Delta
14 Sep
SFO
11:05 pm
San Francisco airport
5h 36m
7:41 am
+1
BOS
Boston Logan Intl airport
237 USD
Delta
Delta
14 Sep
BOS
3:40 am
Boston Logan Intl airport
6h 33m
7:13 am
SFO
San Francisco airport
Delta
16 Sep
SFO
3:30 pm
San Francisco airport
5h 44m
12:14 am
+1
BOS
Boston Logan Intl airport
237 USD

How to get the cheapest flight ticket from Boston to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Francisco?
February
The cheapest time of year to fly to San Francisco from Boston is February. Most expensive is July
What is the cheapest day to fly to San Francisco?
Wednesday
The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday
When is the cheapest time to fly to San Francisco?
at noon
Boston to San Francisco flights are approximately 33% more expensive in the afternoon than at noon
What is the cheapest airline that flies to San Francisco?
Frontier
Frontier, Spirit Airlines, and Sun Country Air are the most popular carriers operating from Boston to San Francisco
What is the cheapest route?
Boston Logan Intl - San Francisco
Fly from Boston Logan Intl to San Francisco for the best Boston - San Francisco flight prices
BOS
Boston Logan Intl
SFO
San Francisco
When is the cheapest time to book a flight to San Francisco?
60 days before
The cheapest time to buy a flight from Boston to San Francisco is approximately 60 days to departure
60
Days before departure
0

Flight information for Boston to San Francisco (SFO - BOS)

Find info about flight duration, direct flights, and airports for your flight from Boston to San Francisco
Fastest flight time 6h 25m The fastest flight from Boston to San Francisco takes 6h 25m.
Direct flights Every day Direct flights go from Boston to San Francisco every day.
Airports in San Francisco 1 airport There is 1 airport near San Francisco: San Francisco (SFO)

Alternative routes for Boston to San Francisco

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Providence to San Francisco
Fastest flight time
8h 20m
Cheapest price
215 USD

Flights from Boston to:

Flights to San Francisco from:

  • Boston Logan Intl
  • Massachusetts
  • United States
  • North America
*Flight prices to San Francisco are based on prices for economy tickets found by momondo users during searches within the last 72 hours. These prices may no longer be available.