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

Home Premium Fare Deals About

United Airlines

UAUnited Airlines

Round Trip•Economy

San Francisco International Airport

San Francisco, United States

Logan International Airport

Boston, United States

$424 USD

-42%$245 USD

Verified 13 days ago

July 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

29 30 1 2 3 4 5$552 6$608 7$567 8$507 9$507 10$507 11$507 12$457 13$457 14$457 15$467 16$457 17$457 18$457 19$327 20$320 21$327 22$327 23$327 24$320 25$320 26$368 27$414 28$284 29$255 30$307 31$306 1$348 2$286

Extremely Rare Availability

1% of dates checked are available within 10% of the lowest price

Tuesday, July 21st, 2026

5 round-trip options

Returning

Sun, Jul 26, 2026•5 Day Trip

$432 USD

Returning

Mon, Jul 27, 2026•6 Day Trip

$348 USD

Returning

Fri, Jul 31, 2026•10 Day Trip

$327 USD

Returning

Sun, Aug 2, 2026•12 Day Trip

$533 USD

Returning

Tue, Aug 4, 2026•14 Day Trip

$390 USD