BOS to SEA from $273 in economy

B6JetBlue Airways

Round Trip•Economy

BOS

Logan International Airport

Boston, United States

SEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$405 USD

-33%$273 USD

Verified 13 days ago

July 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

29 30 1 2 3 4 5$722 6$722 7$722 8$567 9$557 10$557 11$557 12$482 13$482 14$482 15$467 16$447 17$431 18$431 19$402 20$386 21$386 22$386 23$386 24$396 25$447 26$447 27$447 28$412 29$432 30$467 31$471 1$396 2$412

Fair Availability

22% of dates checked are available within 10% of the lowest price

Saturday, July 18th, 2026

7 round-trip options

Returning

Thu, Jul 23, 2026•5 Day Trip

$492 USD

Google Flights

Returning

Fri, Jul 24, 2026•6 Day Trip

$482 USD

Google Flights

Returning

Sat, Jul 25, 2026•7 Day Trip

$482 USD

Google Flights

Returning

Sun, Jul 26, 2026•8 Day Trip

$527 USD

Google Flights

Returning

Mon, Jul 27, 2026•9 Day Trip

$467 USD

Google Flights

Returning

Wed, Jul 29, 2026•11 Day Trip

$431 USD

Google Flights

Returning

Thu, Jul 30, 2026•12 Day Trip

$527 USD

Google Flights

Boston (BOS) to Seattle / Tacoma (SEA) flight deal in economy from $273

Logan International Airport

Seattle–Tacoma International Airport

July 2026

Saturday, July 18th, 2026