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

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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

September 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$286 1$260 2$260 3$494 4$426 5$277 6$308 7$312 8$271 9$297 10$322 11$322 12$297 13$322 14$322 15$297 16$297 17$361 18$322 19$297 20$322 21$322 22$297 23$297 24$332 25$322 26$297 27$322 28$322 29$297 30$297 1$332 2$332 3$312 4$332

Extremely Rare Availability

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

Thursday, September 17th, 2026

5 round-trip options

Returning

Tue, Sep 22, 2026•5 Day Trip

$361 USD

Returning

Wed, Sep 23, 2026•6 Day Trip

$361 USD

Returning

Thu, Sep 24, 2026•7 Day Trip

$386 USD

Returning

Sun, Sep 27, 2026•10 Day Trip

$386 USD

Returning

Tue, Sep 29, 2026•12 Day Trip

$361 USD