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

Wednesday, August 19th, 2026

5 round-trip options

Returning
Mon, Aug 24, 2026•5 Day Trip
$331 USD
Google Flights
Returning
Tue, Aug 25, 2026•6 Day Trip
$300 USD
Google Flights
Returning
Sat, Aug 29, 2026•10 Day Trip
$300 USD
Google Flights
Returning
Mon, Aug 31, 2026•12 Day Trip
$331 USD
Google Flights
Returning
Wed, Sep 2, 2026•14 Day Trip
$300 USD
Google Flights