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

AED 1,160 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 AED 1,160 for one-way flights and AED 1,360 for roundtrip, for the period specified. Prices and availability are subject to change.
Frontier Airlines
Wednesday, 29 July, 2026 - Wednesday, 5 August, 2026
IAD
Washington
SEA
Seattle
AED 1,360
Roundtrip
Found 1 day ago
Select Frontier Airlines flight, departing Wednesday, 29 July, 2026 from Washington to Seattle, returning Wednesday, 5 August, 2026, priced at AED 1,360 Found 1 day ago
Frontier Airlines
Wednesday, 29 July, 2026 - Thursday, 6 August, 2026
IAD
Washington
SEA
Seattle
AED 1,440
Roundtrip
Found 1 day ago
Select Frontier Airlines flight, departing Wednesday, 29 July, 2026 from Washington to Seattle, returning Thursday, 6 August, 2026, priced at AED 1,440 Found 1 day ago
Delta
Wednesday, 29 July, 2026 - Monday, 3 August, 2026
IAD
Washington
SEA
Seattle
AED 1,500
Roundtrip
Found 1 day ago
Select Delta flight, departing Wednesday, 29 July, 2026 from Washington to Seattle, returning Monday, 3 August, 2026, priced at AED 1,500 Found 1 day ago
Frontier Airlines
Tuesday, 28 July, 2026 - Wednesday, 5 August, 2026
IAD
Washington
SEA
Seattle
AED 1,510
Roundtrip
Found 1 day ago
Select Frontier Airlines flight, departing Tuesday, 28 July, 2026 from Washington to Seattle, returning Wednesday, 5 August, 2026, priced at AED 1,510 Found 1 day ago
American Airlines
Monday, 3 August, 2026 - Thursday, 6 August, 2026
IAD
Washington
SEA
Seattle
AED 1,576
Roundtrip
Found 1 day ago
Select American Airlines flight, departing Monday, 3 August, 2026 from Washington to Seattle, returning Thursday, 6 August, 2026, priced at AED 1,576 Found 1 day ago
Frontier Airlines
Tuesday, 28 July, 2026 - Thursday, 6 August, 2026
IAD
Washington
SEA
Seattle
AED 1,590
Roundtrip
Found 1 day ago
Select Frontier Airlines flight, departing Tuesday, 28 July, 2026 from Washington to Seattle, returning Thursday, 6 August, 2026, priced at AED 1,590 Found 1 day ago
Frontier Airlines
Wednesday, 29 July, 2026 - Tuesday, 4 August, 2026
IAD
Washington
SEA
Seattle
AED 1,620
Roundtrip
Found 1 day ago
Select Frontier Airlines flight, departing Wednesday, 29 July, 2026 from Washington to Seattle, returning Tuesday, 4 August, 2026, priced at AED 1,620 Found 1 day ago
Delta
Wednesday, 29 July, 2026 - Wednesday, 29 July, 2026
IAD
Washington
SEA
Seattle
AED 1,640
Roundtrip
Found 1 day ago
Select Delta flight, departing Wednesday, 29 July, 2026 from Washington to Seattle, returning Wednesday, 29 July, 2026, priced at AED 1,640 Found 1 day ago
United
Monday, 3 August, 2026 - Saturday, 8 August, 2026
IAD
Washington
SEA
Seattle
AED 1,730
Roundtrip
Found 1 day ago
Select United flight, departing Monday, 3 August, 2026 from Washington to Seattle, returning Saturday, 8 August, 2026, priced at AED 1,730 Found 1 day ago
Alaska Airlines
Friday, 31 July, 2026 - Sunday, 2 August, 2026
IAD
Washington
SEA
Seattle
AED 3,140
Roundtrip
Found 1 day ago
Select Alaska Airlines flight, departing Friday, 31 July, 2026 from Washington to Seattle, returning Sunday, 2 August, 2026, priced at AED 3,140 Found 1 day ago

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, Frontier Airlines, Sun Country Airlines
Popular airline
Alaska Airlines
Roundtrip price
AED 1,360
Average flight time
6 hours 36 mins
*Available to One Key members.