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

Friday, August 21st, 2026

5 round-trip options

Returning
Wed, Aug 26, 2026•5 Day Trip
$286 USD
Google Flights
Returning
Thu, Aug 27, 2026•6 Day Trip
$317 USD
Google Flights
Returning
Mon, Aug 31, 2026•10 Day Trip
$317 USD
Google Flights
Returning
Wed, Sep 2, 2026•12 Day Trip
$286 USD
Google Flights
Returning
Fri, Sep 4, 2026•14 Day Trip
$317 USD
Google Flights