BOS to SFO from $149 in economy – flightdeals.net

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United Airlines

UAUnited Airlines

One Way•Economy

Logan International Airport

Boston, United States

San Francisco International Airport

San Francisco, United States

$223 USD

-33%$149 USD

Verified about 10 hours ago

December 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$274 1$234 2$197 3$197 4$197 5$197 6$197 7$192 8$192 9$192 10$197 11$197 12$197 13$207 14$197 15$197 16$229 17$357 18$510 19$389 20$234 21$197 22$274 23$337 24$239 25$270 26$359 27$592 28$412 29$384 30$270 31$291 1$274 2$207 3$358

Rare Availability

6% of dates checked are available within 10% of the lowest price

Friday, December 18th, 2026

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