Seattle / Tacoma (SEA) to Washington (DCA) flight deal in economy from $275

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
United StatesDCA

Ronald Reagan Washington National Airport

Washington, United States
$459 USD
-40%$275 USD
Verified 13 days ago
Limited Availability
12% of dates checked are available within 10% of the lowest price

Thursday, December 17th, 2026

7 round-trip options

Returning
Tue, Dec 22, 2026•5 Day Trip
$506 USD
Google Flights
Returning
Thu, Dec 24, 2026•7 Day Trip
$467 USD
Google Flights
Returning
Fri, Dec 25, 2026•8 Day Trip
$467 USD
Google Flights
Returning
Sat, Dec 26, 2026•9 Day Trip
$595 USD
Google Flights
Returning
Sun, Dec 27, 2026•10 Day Trip
$874 USD
Google Flights
Returning
Mon, Dec 28, 2026•11 Day Trip
$607 USD
Google Flights
Returning
Tue, Dec 29, 2026•12 Day Trip
$595 USD
Google Flights