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

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesDCA

Ronald Reagan Washington National Airport

Washington, United States
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
$458 USD
-40%$275 USD
Verified 26 days ago
Limited Availability
12% of dates checked are available within 10% of the lowest price

Monday, July 20th, 2026

10 round-trip options

Returning
Sat, Jul 25, 2026•5 Day Trip
$470 USD
Google Flights
Returning
Sun, Jul 26, 2026•6 Day Trip
$524 USD
Google Flights
Returning
Mon, Jul 27, 2026•7 Day Trip
$402 USD
Google Flights
Returning
Tue, Jul 28, 2026•8 Day Trip
$402 USD
Google Flights
Returning
Wed, Jul 29, 2026•9 Day Trip
$339 USD
Google Flights
Returning
Thu, Jul 30, 2026•10 Day Trip
$450 USD
Google Flights
Returning
Fri, Jul 31, 2026•11 Day Trip
$406 USD
Google Flights
Returning
Sat, Aug 1, 2026•12 Day Trip
$467 USD
Google Flights
Returning
Sun, Aug 2, 2026•13 Day Trip
$565 USD
Google Flights
Returning
Mon, Aug 3, 2026•14 Day Trip
$450 USD
Google Flights