RM498 Cheap Flights from Washington (IAD) to Seattle (SEA)

View RM498 flight on Sat, 6 Dec 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Washington to Seattle (IAD-SEA)

Prices were available within the past 7 days and start at RM498 for one-way flights and RM829 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 6 Dec - Fri, 12 Dec
IAD
Washington
SEA
Seattle
RM829 Return, found 4 days ago
RM829
Return
found 4 days ago
Select Delta flight, departing Sat, 6 Dec from Washington to Seattle, returning Fri, 12 Dec, priced at RM829 found 4 days ago
Delta
Sat, 6 Dec - Fri, 12 Dec
IAD
Washington
SEA
Seattle
RM870 Return, found 4 days ago
RM870
Return
found 4 days ago
Select Delta flight, departing Sat, 6 Dec from Washington to Seattle, returning Fri, 12 Dec, priced at RM870 found 4 days ago
Delta
Sat, 6 Dec - Fri, 12 Dec
IAD
Washington
SEA
Seattle
RM911 Return, found 4 days ago
RM911
Return
found 4 days ago
Select Delta flight, departing Sat, 6 Dec from Washington to Seattle, returning Fri, 12 Dec, priced at RM911 found 4 days ago
Delta
Sat, 6 Dec - Fri, 12 Dec
IAD
Washington
SEA
Seattle
RM1,198 Return, found 4 days ago
RM1,198
Return
found 4 days ago
Select Delta flight, departing Sat, 6 Dec from Washington to Seattle, returning Fri, 12 Dec, priced at RM1,198 found 4 days ago
United
Sat, 6 Dec - Fri, 12 Dec
IAD
Washington
SEA
Seattle
RM1,203 Return, found 4 days ago
RM1,203
Return
found 4 days ago
Select United flight, departing Sat, 6 Dec from Washington to Seattle, returning Fri, 12 Dec, priced at RM1,203 found 4 days ago
Delta
Sat, 6 Dec - Fri, 12 Dec
IAD
Washington
SEA
Seattle
RM1,239 Return, found 4 days ago
RM1,239
Return
found 4 days ago
Select Delta flight, departing Sat, 6 Dec from Washington to Seattle, returning Fri, 12 Dec, priced at RM1,239 found 4 days ago
United
Sat, 6 Dec - Fri, 12 Dec
IAD
Washington
SEA
Seattle
RM1,244 Return, found 4 days ago
RM1,244
Return
found 4 days ago
Select United flight, departing Sat, 6 Dec from Washington to Seattle, returning Fri, 12 Dec, priced at RM1,244 found 4 days ago
United
Sat, 6 Dec - Fri, 12 Dec
IAD
Washington
SEA
Seattle
RM1,285 Return, found 4 days ago
RM1,285
Return
found 4 days ago
Select United flight, departing Sat, 6 Dec from Washington to Seattle, returning Fri, 12 Dec, priced at RM1,285 found 4 days ago
United
Sat, 6 Dec - Fri, 12 Dec
IAD
Washington
SEA
Seattle
RM1,364 Return, found 4 days ago
RM1,364
Return
found 4 days ago
Select United flight, departing Sat, 6 Dec from Washington to Seattle, returning Fri, 12 Dec, priced at RM1,364 found 4 days ago
American Airlines
Sat, 6 Dec - Fri, 12 Dec
IAD
Washington
SEA
Seattle
RM1,731 Return, found 4 days ago
RM1,731
Return
found 4 days ago
Select American Airlines flight, departing Sat, 6 Dec from Washington to Seattle, returning Fri, 12 Dec, priced at RM1,731 found 4 days ago

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

January is typically the cheapest month to fly

From RM 708 - RM 1,483 per traveller.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
RM829
Distance
3679 km
Average flight time
2 hours 58 mins

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Perfect flights from Washington to Seattle

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Washington to Seattle

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