An Alaska Airlines plane taking off with a snow-capped mountain in the background.

₩283,100 Cheap Flights from Washington (IAD) to Seattle (SEA)

Photo by Port of Seattle
Open Photo by Port of Seattle

Cheap Flights from Washington to Seattle (IAD-SEA)

Prices were available within the past 7 days and start at ₩283,100 for one-way flights and ₩511,900 for roundtrip, for the period specified. Prices and availability are subject to change.
Delta
Fri, Nov 6 - Mon, Nov 9
IAD
Washington
SEA
Seattle
₩511,900
Roundtrip
Found 8 hours ago
Select Delta flight, departing Fri, Nov 6 from Washington to Seattle, returning Mon, Nov 9, priced at ₩511,900 Found 8 hours ago
Delta
Fri, Nov 6 - Mon, Nov 9
IAD
Washington
SEA
Seattle
₩606,800
Roundtrip
Found 8 hours ago
Select Delta flight, departing Fri, Nov 6 from Washington to Seattle, returning Mon, Nov 9, priced at ₩606,800 Found 8 hours ago
United
Fri, Nov 6 - Mon, Nov 9
IAD
Washington
SEA
Seattle
₩654,500
Roundtrip
Found 8 hours ago
Select United flight, departing Fri, Nov 6 from Washington to Seattle, returning Mon, Nov 9, priced at ₩654,500 Found 8 hours ago
Delta
Fri, Nov 6 - Mon, Nov 9
IAD
Washington
SEA
Seattle
₩661,300
Roundtrip
Found 8 hours ago
Select Delta flight, departing Fri, Nov 6 from Washington to Seattle, returning Mon, Nov 9, priced at ₩661,300 Found 8 hours ago
United
Fri, Nov 6 - Mon, Nov 9
IAD
Washington
SEA
Seattle
₩667,900
Roundtrip
Found 8 hours ago
Select United flight, departing Fri, Nov 6 from Washington to Seattle, returning Mon, Nov 9, priced at ₩667,900 Found 8 hours ago
Delta
Fri, Nov 6 - Mon, Nov 9
IAD
Washington
SEA
Seattle
₩674,600
Roundtrip
Found 8 hours ago
Select Delta flight, departing Fri, Nov 6 from Washington to Seattle, returning Mon, Nov 9, priced at ₩674,600 Found 8 hours ago
American Airlines
Fri, Nov 6 - Mon, Nov 9
IAD
Washington
SEA
Seattle
₩688,400
Roundtrip
Found 8 hours ago
Select American Airlines flight, departing Fri, Nov 6 from Washington to Seattle, returning Mon, Nov 9, priced at ₩688,400 Found 8 hours ago
United
Fri, Nov 6 - Mon, Nov 9
IAD
Washington
SEA
Seattle
₩688,400
Roundtrip
Found 8 hours ago
Select United flight, departing Fri, Nov 6 from Washington to Seattle, returning Mon, Nov 9, priced at ₩688,400 Found 8 hours ago
United
Fri, Nov 6 - Mon, Nov 9
IAD
Washington
SEA
Seattle
₩695,100
Roundtrip
Found 8 hours ago
Select United flight, departing Fri, Nov 6 from Washington to Seattle, returning Mon, Nov 9, priced at ₩695,100 Found 8 hours ago
Alaska Airlines
Fri, Nov 6 - Mon, Nov 9
IAD
Washington
SEA
Seattle
₩742,700
Roundtrip
Found 8 hours ago
Select Alaska Airlines flight, departing Fri, Nov 6 from Washington to Seattle, returning Mon, Nov 9, priced at ₩742,700 Found 8 hours ago

Find the cheapest month to fly from Washington (IAD) to Seattle (SEA)

October is typically the cheapest month to fly

From ₩239,385 - ₩509,642 per traveler.

Travel information

Origin airport
Washington Dulles Intl. Airport
Destination airport
Seattle-Tacoma International Airport
Distance
3,701 km away
Airlines serving
Alaska Airlines, American Airlines, Delta, United, Sun Country Airlines, Frontier Airlines
Popular airline
Alaska Airlines
Roundtrip price
₩511,900
Average flight time
6 hours 7 mins
*Available to One Key members.