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, August 20th, 2026

5 round-trip options

Returning
Tue, Aug 25, 2026•5 Day Trip
$411 USD
Google Flights
Returning
Wed, Aug 26, 2026•6 Day Trip
$411 USD
Google Flights
Returning
Sun, Aug 30, 2026•10 Day Trip
$442 USD
Google Flights
Returning
Tue, Sep 1, 2026•12 Day Trip
$411 USD
Google Flights
Returning
Thu, Sep 3, 2026•14 Day Trip
$442 USD
Google Flights