Seattle / Tacoma (SEA) to Washington (DCA) flight deal from $143 USD in economy class – flightdeals.net

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United Airlines

UAUnited Airlines

One Way•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

Ronald Reagan Washington National Airport

Washington, United States

$228 USD

-37%$143 USD

Verified Apr 7, 2026 at 7:12 PM

April 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30 31 1 2 3 4 5 6 7$498 8$498 9$463 10$463 11$519 12$519 13$405 14$398 15$398 16$398 17$398 18$398 19$398 20$373 21$277 22$277 23$282 24$277 25$282 26$319 27$273 28$199 29$199 30$199 1$199 2$199 3$199

Fair Availability

22% of dates checked are available within 10% of the lowest price

Thursday, April 2nd, 2026

No flight details available for this date.