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
JetBlue
JetBlue
27 Aug
BOS
5:38 pm
Boston Logan Intl airport
6h 32m
9:10 pm
SFO
San Francisco airport
JetBlue
04 Sep
SFO
3:25 pm
San Francisco airport
5h 50m
12:15 am
+1
BOS
Boston Logan Intl airport
237 USD
United Airlines
United Airlines
31 Aug
BOS
5:25 am
Boston Logan Intl airport
6h 38m
9:03 am
SFO
San Francisco airport
United Airlines
04 Sep
SFO
9:10 am
San Francisco airport
5h 38m
5:48 pm
BOS
Boston Logan Intl airport
237 USD
Delta
Delta
01 Sep
BOS
3:40 am
Boston Logan Intl airport
6h 33m
7:13 am
SFO
San Francisco airport
Delta
04 Sep
SFO
3:30 pm
San Francisco airport
5h 44m
12:14 am
+1
BOS
Boston Logan Intl airport
237 USD
United Airlines
United Airlines
31 Aug
BOS
5:25 am
Boston Logan Intl airport
6h 38m
9:03 am
SFO
San Francisco airport
United Airlines
04 Sep
SFO
9:10 am
San Francisco airport
5h 38m
5:48 pm
BOS
Boston Logan Intl airport
237 USD
United Airlines
United Airlines
06 Sep
BOS
5:25 am
Boston Logan Intl airport
6h 38m
9:03 am
SFO
San Francisco airport
United Airlines
08 Sep
SFO
4:45 pm
San Francisco airport
5h 38m
1:23 am
+1
BOS
Boston Logan Intl airport
237 USD
Delta
Delta
01 Sep
BOS
3:40 am
Boston Logan Intl airport
6h 33m
7:13 am
SFO
San Francisco airport
Delta
04 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
CHEAPEST MONTH TO FLY
February
The cheapest time of year to fly to San Francisco from Boston is February. Most expensive is June
CHEAPEST DAY TO FLY
Wednesday
The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday
CHEAPEST TIME TO FLY
at noon
Boston to San Francisco flights are approximately 160% more expensive in the afternoon than at noon
CHEAPEST AIRLINE
Frontier
Frontier, Spirit Airlines, and Sun Country Air are the most popular carriers operating from Boston to San Francisco
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
CHEAPEST TIME TO BOOK
57 days before
The cheapest time to buy a flight from Boston to San Francisco is approximately 57 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
7h 59m
Cheapest price
251 USD

Flights from Boston to:

Flights to San Francisco from:

  • Boston Logan Intl
  • Massachusetts
  • United States
  • North America