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

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesBOS

Logan International Airport

Boston, United States
United StatesSFO

San Francisco International Airport

San Francisco, United States
$409 USD
-40%$245 USD
Verified 16 days ago
Extremely Rare Availability
2% of dates checked are available within 10% of the lowest price

Saturday, November 21st, 2026

3 round-trip options

Returning
Thu, Nov 26, 2026•5 Day Trip
$407 USD
Google Flights
Returning
Tue, Dec 1, 2026•10 Day Trip
$407 USD
Google Flights
Returning
Sat, Dec 5, 2026•14 Day Trip
$407 USD
Google Flights