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 3 hours ago

September 2026

Mon

Tue

Wed

Thu

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Sun

31$179 1$149 2$149 3$169 4$169 5$149 6$179 7$265 8$220 9$187 10$197 11$197 12$197 13$197 14$197 15$187 16$187 17$197 18$197 19$197 20$197 21$197 22$187 23$187 24$197 25$197 26$197 27$226 28$197 29$187 30$187 1$197 2$197 3$197 4$282

Rare Availability

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

Tuesday, September 22nd, 2026

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