Boston (BOS) to San Francisco (SFO) flight deal in economy from $363

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesBOS

Logan International Airport

Boston, United States
United StatesSFO

San Francisco International Airport

San Francisco, United States
$450 USD
-19%$363 USD
Verified 2 days ago
Good Availability
50% of dates checked are available within 10% of the lowest price

Tuesday, September 29th, 2026

10 round-trip options

Returning
Sun, Oct 4, 2026•5 Day Trip
$378 USD
Google Flights
Returning
Mon, Oct 5, 2026•6 Day Trip
$378 USD
Google Flights
Returning
Tue, Oct 6, 2026•7 Day Trip
$363 USD
Google Flights
Returning
Wed, Oct 7, 2026•8 Day Trip
$363 USD
Google Flights
Returning
Thu, Oct 8, 2026•9 Day Trip
$487 USD
Google Flights
Returning
Fri, Oct 9, 2026•10 Day Trip
$410 USD
Google Flights
Returning
Sat, Oct 10, 2026•11 Day Trip
$378 USD
Google Flights
Returning
Sun, Oct 11, 2026•12 Day Trip
$378 USD
Google Flights
Returning
Mon, Oct 12, 2026•13 Day Trip
$378 USD
Google Flights
Returning
Tue, Oct 13, 2026•14 Day Trip
$363 USD
Google Flights