Find the Cheapest Flights from Boston to San Francisco International Airport
Unlock the cheapest flights and the best airfares from Boston to San Francisco International Airport. Make your dream trip both memorable and affordable!
Boston to San Francisco International Airport: Flight information
Cheapest flight found$113
Cheapest month to flyMay
Most popular airlineAlaska Airlines
Flights per week1
Popular Airlines flying from
Boston to San Francisco International Airport
From
Boston
Nov 22, 2024
To
San Francisco International Airport
oneway / Economy
$113
Viewed: 4 months ago
From
Boston
Oct 14, 2025
To
San Francisco International Airport
oneway / Economy
$130
Viewed: 4 months ago
From
Boston
Apr 12, 2024
To
San Francisco International Airport
oneway / Economy
$136
Viewed: a year ago
From
Boston
Apr 13, 2024
To
San Francisco International Airport
oneway / Economy
$136
Viewed: a year ago
From
Boston
Jul 10, 2023
To
San Francisco International Airport
oneway / Economy
$241
Viewed: 2 years ago
From
Boston
Aug 15, 2023
To
San Francisco International Airport
oneway / Economy
$360
Viewed: 2 years ago
Cheapest flight found
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FAQs
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