SEA to BOS from $384 in economy – flightdeals.net

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United Airlines

UAUnited Airlines

Round Trip•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

Logan International Airport

Boston, United States

$527 USD

-27%$384 USD

Verified about 6 hours ago

June 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 2 3 4 5 6 7 8 9 10 11$540 12$655 13$585 14$734 15$515 16$472 17$584 18$447 19$447 20$488 21$656 22$643 23$533 24$543 25$409 26$440 27$444 28$605 29$489 30$389 1$518 2$567 3$493 4$419 5$709

Limited Availability

16% of dates checked are available within 10% of the lowest price

Wednesday, June 24th, 2026

1 round-trip options

Returning

Wed, Jul 8, 2026•14 Day Trip

$543 USD