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

NT$6,064 Cheap Flights from Washington (DCA) to Seattle (SEA)

Photo by Port of Seattle
Open Photo by Port of Seattle

Cheap Flights from Washington to Seattle (DCA-SEA)

Prices were available within the past 7 days and start at NT$6,064 for one-way flights, for the period specified. Prices and availability are subject to change.
Delta
Sun, Aug 30
DCA
Washington
SEA
Seattle
NT$6,064
One way
Found 5 days ago
Select Delta flight, departing Sun, Aug 30 from Washington to Seattle, priced at NT$6,064 Found 5 days ago
American Airlines
Thu, Sep 24
DCA
Washington
SEA
Seattle
NT$6,700
One way
Found 4 hours ago
Select American Airlines flight, departing Thu, Sep 24 from Washington to Seattle, priced at NT$6,700 Found 4 hours ago
American Airlines
Sun, Aug 30
DCA
Washington
SEA
Seattle
NT$6,705
One way
Found 5 days ago
Select American Airlines flight, departing Sun, Aug 30 from Washington to Seattle, priced at NT$6,705 Found 5 days ago
American Airlines
Sun, Sep 20
DCA
Washington
SEA
Seattle
NT$6,716
One way
Found 5 days ago
Select American Airlines flight, departing Sun, Sep 20 from Washington to Seattle, priced at NT$6,716 Found 5 days ago
American Airlines
Fri, Sep 18
DCA
Washington
SEA
Seattle
NT$6,727
One way
Found 3 days ago
Select American Airlines flight, departing Fri, Sep 18 from Washington to Seattle, priced at NT$6,727 Found 3 days ago
United
Sun, Aug 30
DCA
Washington
SEA
Seattle
NT$7,352
One way
Found 5 days ago
Select United flight, departing Sun, Aug 30 from Washington to Seattle, priced at NT$7,352 Found 5 days ago
United
Sun, Sep 20
DCA
Washington
SEA
Seattle
NT$7,364
One way
Found 5 days ago
Select United flight, departing Sun, Sep 20 from Washington to Seattle, priced at NT$7,364 Found 5 days ago
United
Sun, Aug 30
DCA
Washington
SEA
Seattle
NT$7,524
One way
Found 5 days ago
Select United flight, departing Sun, Aug 30 from Washington to Seattle, priced at NT$7,524 Found 5 days ago
Delta
Sun, Sep 20
DCA
Washington
SEA
Seattle
NT$8,050
One way
Found 5 days ago
Select Delta flight, departing Sun, Sep 20 from Washington to Seattle, priced at NT$8,050 Found 5 days ago
United
Thu, Sep 24
DCA
Washington
SEA
Seattle
NT$8,154
One way
Found 4 hours ago
Select United flight, departing Thu, Sep 24 from Washington to Seattle, priced at NT$8,154 Found 4 hours ago
United
Sun, Aug 30
DCA
Washington
SEA
Seattle
NT$8,161
One way
Found 5 days ago
Select United flight, departing Sun, Aug 30 from Washington to Seattle, priced at NT$8,161 Found 5 days ago
American Airlines
Sun, Sep 20
DCA
Washington
SEA
Seattle
NT$8,174
One way
Found 5 days ago
Select American Airlines flight, departing Sun, Sep 20 from Washington to Seattle, priced at NT$8,174 Found 5 days ago
American Airlines
Fri, Sep 18
DCA
Washington
SEA
Seattle
NT$8,188
One way
Found 3 days ago
Select American Airlines flight, departing Fri, Sep 18 from Washington to Seattle, priced at NT$8,188 Found 3 days ago
United
Sun, Aug 30
DCA
Washington
SEA
Seattle
NT$8,333
One way
Found 5 days ago
Select United flight, departing Sun, Aug 30 from Washington to Seattle, priced at NT$8,333 Found 5 days ago
Delta
Sun, Sep 20
DCA
Washington
SEA
Seattle
NT$8,368
One way
Found 5 days ago
Select Delta flight, departing Sun, Sep 20 from Washington to Seattle, priced at NT$8,368 Found 5 days ago
American Airlines
Thu, Sep 24
DCA
Washington
SEA
Seattle
NT$8,801
One way
Found 4 hours ago
Select American Airlines flight, departing Thu, Sep 24 from Washington to Seattle, priced at NT$8,801 Found 4 hours ago
Delta
Mon, Aug 24
DCA
Washington
SEA
Seattle
NT$8,808
One way
Found 5 days ago
Select Delta flight, departing Mon, Aug 24 from Washington to Seattle, priced at NT$8,808 Found 5 days ago
American Airlines
Fri, Sep 18
DCA
Washington
SEA
Seattle
NT$8,837
One way
Found 3 days ago
Select American Airlines flight, departing Fri, Sep 18 from Washington to Seattle, priced at NT$8,837 Found 3 days ago
Delta
Thu, Sep 24
DCA
Washington
SEA
Seattle
NT$8,838
One way
Found 4 hours ago
Select Delta flight, departing Thu, Sep 24 from Washington to Seattle, priced at NT$8,838 Found 4 hours ago
American Airlines
Mon, Aug 24
DCA
Washington
SEA
Seattle
NT$8,840
One way
Found 5 days ago
Select American Airlines flight, departing Mon, Aug 24 from Washington to Seattle, priced at NT$8,840 Found 5 days ago

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

September is typically the cheapest month to fly

From NT$7,946 - NT$10,512 per traveler.

Travel information

Origin airport
Ronald Reagan Washington National Airport
Destination airport
Seattle-Tacoma International Airport
Distance
3,737 km away
Airlines serving
Alaska Airlines, JetBlue Airways, American Airlines, United, Delta, Southwest Airlines, Frontier Airlines
Popular airline
Alaska Airlines
Roundtrip price
NT$6,064
Average flight time
8 hours 2 mins
*Available to One Key members.