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

Tuesday, November 3rd, 2026

3 round-trip options

Returning
Sun, Nov 8, 2026•5 Day Trip
$322 USD
Google Flights
Returning
Fri, Nov 13, 2026•10 Day Trip
$322 USD
Google Flights
Returning
Tue, Nov 17, 2026•14 Day Trip
$297 USD
Google Flights