IAD to SEA from $148 in economy – flightdeals.net

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Alaska Airlines, Inc.

ASAlaska Airlines, Inc.

One Way•Economy

Washington Dulles International Airport

Washington, United States

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$237 USD

-38%$148 USD

Verified 17 days ago

July 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

29 30 1 2 3 4$614 5$842 6$549 7$549 8$549 9$549 10$521 11$434 12$439 13$439 14$434 15$434 16$439 17$439 18$319 19$339 20$319 21$314 22$319 23$381 24$334 25$263 26$317 27$233 28$263 29$334 30$279 31$384 1$263 2$233

Fair Availability

21% of dates checked are available within 10% of the lowest price

Thursday, July 2nd, 2026

No flight details available for this date.