BOS to SFO from $245 in economy – flightdeals.net

Home Premium Fare Deals About

United Airlines

UAUnited Airlines

Round Trip•Economy

Logan International Airport

Boston, United States

San Francisco International Airport

San Francisco, United States

$409 USD

-40%$245 USD

Verified 16 days ago

December 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$767 1$492 2$397 3$397 4$397 5$397 6$397 7$397 8$397 9$397 10$397 11$397 12$397 13$397 14$397 15$397 16$397 17$580 18$745 19$397 20$547 21$427 22$547 23$693 24$427 25$463 26$767 27$767 28$580 29$569 30$463 31$463 1$482 2$590 3$547

Extremely Rare Availability

2% of dates checked are available within 10% of the lowest price

Thursday, December 31st, 2026

3 round-trip options

Returning

Tue, Jan 5, 2027•5 Day Trip

$463 USD

Returning

Sun, Jan 10, 2027•10 Day Trip

$463 USD

Returning

Thu, Jan 14, 2027•14 Day Trip

$593 USD