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

Home Premium Fare Deals About

Alaska Airlines, Inc.

ASAlaska Airlines, Inc.

One Way•Economy

Washington Dulles International Airport

Washington, United States

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$258 USD

-43%$148 USD

Verified 1 day ago

July 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

29$309 30$279 1$384 2$369 3$183 4$188 5$233 6$339 7$238 8$183 9$369 10$339 11$369 12$233 13$233 14$163 15$188 16$339 17$339 18$279 19$279 20$163 21$163 22$233 23$344 24$279 25$309 26$233 27$148 28$148 29$163 30$188 31$369 1$309 2$279

Fair Availability

20% of dates checked are available within 10% of the lowest price

Monday, July 20th, 2026

Outbound Flights

·

→

·

→

·

→