San Francisco (SFO) to Boston (BOS) flight deal in economy from $245

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesSFO

San Francisco International Airport

San Francisco, United States
United StatesBOS

Logan International Airport

Boston, United States
$424 USD
-42%$245 USD
Verified 13 days ago
Extremely Rare Availability
1% of dates checked are available within 10% of the lowest price

Thursday, October 1st, 2026

5 round-trip options

Returning
Tue, Oct 6, 2026•5 Day Trip
$332 USD
Google Flights
Returning
Wed, Oct 7, 2026•6 Day Trip
$332 USD
Google Flights
Returning
Thu, Oct 8, 2026•7 Day Trip
$357 USD
Google Flights
Returning
Sun, Oct 11, 2026•10 Day Trip
$482 USD
Google Flights
Returning
Tue, Oct 13, 2026•12 Day Trip
$347 USD
Google Flights