An airport terminal with a control tower, a covered walkway, and multiple jet bridges.

Flights from Seattle-Tacoma International Airport (SEA) to Ronald Reagan Washington National Airport (DCA)
Flights to Washington
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United States of America
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Popular airlines from Seattle-Tacoma International Airport (SEA) to Ronald Reagan Washington National Airport (DCA)

Alaska Airlines
Delta
American Airlines
United
Southwest Airlines
JetBlue Airways
Frontier Airlines

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Cheap Flights from Seattle to Washington (SEA-DCA)

Prices were available within the past 7 days and start at NT$6,659 for one-way flights and NT$12,040 for roundtrip, for the period specified. Prices and availability are subject to change.

All deals

One way

Roundtrip

Thu, Dec 3 - Wed, Dec 9

SEA

Seattle

DCA

Washington

NT$12,040

Roundtrip

Found 19 hours ago

Select Delta flight, departing Thu, Dec 3 from Seattle to Washington, returning Wed, Dec 9, priced at NT$12,040 Found 19 hours ago

Thu, Dec 3 - Wed, Dec 9

SEA

Seattle

DCA

Washington

NT$14,270

Roundtrip

Found 19 hours ago

Select Delta flight, departing Thu, Dec 3 from Seattle to Washington, returning Wed, Dec 9, priced at NT$14,270 Found 19 hours ago

Sun, Nov 1 - Tue, Nov 3

SEA

Seattle

DCA

Washington

NT$14,872

Roundtrip

Found 4 days ago

Select Delta flight, departing Sun, Nov 1 from Seattle to Washington, returning Tue, Nov 3, priced at NT$14,872 Found 4 days ago

Thu, Dec 3 - Wed, Dec 9

SEA

Seattle

DCA

Washington

NT$15,708

Roundtrip

Found 19 hours ago

Select American Airlines flight, departing Thu, Dec 3 from Seattle to Washington, returning Wed, Dec 9, priced at NT$15,708 Found 19 hours ago

Sun, Nov 1 - Tue, Nov 3

SEA

Seattle

DCA

Washington

NT$15,823

Roundtrip

Found 4 days ago

Select Delta flight, departing Sun, Nov 1 from Seattle to Washington, returning Tue, Nov 3, priced at NT$15,823 Found 4 days ago

Sun, Nov 1 - Tue, Nov 3

SEA

Seattle

DCA

Washington

NT$16,461

Roundtrip

Found 4 days ago

Select Delta flight, departing Sun, Nov 1 from Seattle to Washington, returning Tue, Nov 3, priced at NT$16,461 Found 4 days ago

Thu, Dec 3 - Wed, Dec 9

SEA

Seattle

DCA

Washington

NT$16,501

Roundtrip

Found 19 hours ago

Select Delta flight, departing Thu, Dec 3 from Seattle to Washington, returning Wed, Dec 9, priced at NT$16,501 Found 19 hours ago

Sun, Nov 1 - Tue, Nov 3

SEA

Seattle

DCA

Washington

NT$16,773

Roundtrip

Found 4 days ago

Select Delta flight, departing Sun, Nov 1 from Seattle to Washington, returning Tue, Nov 3, priced at NT$16,773 Found 4 days ago

Thu, Dec 3 - Wed, Dec 9

SEA

Seattle

DCA

Washington

NT$16,820

Roundtrip

Found 19 hours ago

Select American Airlines flight, departing Thu, Dec 3 from Seattle to Washington, returning Wed, Dec 9, priced at NT$16,820 Found 19 hours ago

Sun, Nov 1 - Tue, Nov 3

SEA

Seattle

DCA

Washington

NT$17,257

Roundtrip

Found 4 days ago

Select American Airlines flight, departing Sun, Nov 1 from Seattle to Washington, returning Tue, Nov 3, priced at NT$17,257 Found 4 days ago

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

October is typically the cheapest month to fly

From NT$5,641 - NT$12,850 per traveler.

Travel information

Origin airport	Seattle-Tacoma International Airport
Destination airport	Ronald Reagan Washington National Airport
Distance	3,737 km away
Airlines serving	Alaska Airlines, Delta, American Airlines, United, Southwest Airlines, JetBlue Airways, Frontier Airlines
Popular airline	Alaska Airlines
Roundtrip price	NT$12,040
Average flight time	5 hours 13 mins

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NT$6,659 Cheap Flights from Seattle (SEA) to Washington (DCA)

Popular airlines from Seattle-Tacoma International Airport (SEA) to Ronald Reagan Washington National Airport (DCA)

Be in the know

Book smarter

Earn twice

Cheap Flights from Seattle to Washington (SEA-DCA)

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

October is typically the cheapest month to flyOctober is typically the cheapest month to fly

Travel information

Explore a world of travel with Expedia

October is typically the cheapest month to fly