Flights from Seattle to Washington, D.C.

4 airlines fly nonstop from Seattle to Washington, D.C..

Distance
2,321 mi
Nonstop flight
Varies
Time difference
+3h
Nonstop airlines
4
SEA
WAS

Fares from Seattle to Washington, D.C.

Checking today’s fares with the airlines.

Nonstop flights

AirlineFromTo
Alaska AirlinesSEA Seattle-Tacoma International AirportIAD Washington Dulles International Airport
Alaska AirlinesSEA Seattle-Tacoma International AirportDCA Ronald Reagan Washington National Airport
Alaska AirlinesSEA Seattle-Tacoma International AirportBWI Baltimore/Washington International Thurgood Marshall Airport
Delta Air LinesSEA Seattle-Tacoma International AirportIAD Washington Dulles International Airport
Delta Air LinesSEA Seattle-Tacoma International AirportDCA Ronald Reagan Washington National Airport
United AirlinesSEA Seattle-Tacoma International AirportIAD Washington Dulles International Airport
Southwest AirlinesSeasonalSEA Seattle-Tacoma International AirportBWI Baltimore/Washington International Thurgood Marshall Airport

Nonstop service as of October 2026. Airlines change schedules seasonally.

Getting from the airport into Washington, D.C.

IAD

Washington Dulles International Airport

26 miles (42 km) from the city centre. 29 million passengers in 2025

HowRouteTimeCost
SubwayMetro Silver Line from Dulles Airport station to Metro Centerabout 53mstandard distance-based Metro fare, no airport surcharge
BWI

Baltimore/Washington International Thurgood Marshall Airport

31 miles (50 km) from the city centre. 27.1 million passengers in 2024

HowRoute
TrainMARC Penn Line or Amtrak from BWI Rail Station (free shuttle bus from terminal) to Washington Union Station
DCA

Ronald Reagan Washington National Airport

5 miles (8 km) from the city centre. 26.3 million passengers in 2024

HowRouteCost
SubwayMetro Blue and Yellow lines from Ronald Reagan Washington National Airport station, linked to Terminal 2 by pedestrian walkwaysMetro fares $2.25-$6.75 at weekday peak by distance

Before you go

This is domestic travel for US citizens: no passport or visa is needed, but travelers 18 and over need a REAL ID-compliant license or another accepted ID to fly.

Washington, D.C. is 3 hours ahead of Seattle. Washington, D.C. uses the US dollar (USD).

Read the Washington, D.C. guide: when to go, weather, airports and tips

Frequently asked questions

How long is the flight from Seattle to Washington, D.C.?

Nonstop flight times vary by airline and season; flights with a connection take longer.

Which airlines fly nonstop from Seattle to Washington, D.C.?

As of October 2026, Alaska Airlines, Delta Air Lines, United Airlines and Southwest Airlines fly this route nonstop, some of them seasonally.

Which airports do nonstop flights use?

Nonstop flights leave from Seattle-Tacoma International Airport (SEA) and arrive at Washington Dulles International Airport (IAD), Ronald Reagan Washington National Airport (DCA) and Baltimore/Washington International Thurgood Marshall Airport (BWI).

How far is Washington, D.C. from Seattle?

About 2,321 miles (3,736 km), measured between the city centres.

What is the time difference?

Washington, D.C. is 3 hours ahead of Seattle.

What ID do I need to fly to Washington, D.C.?

This is domestic travel for US citizens: no passport or visa is needed, but travelers 18 and over need a REAL ID-compliant license or another accepted ID to fly.

How do I get from Washington Dulles International Airport into Washington, D.C.?

Metro Silver Line from Dulles Airport station to Metro Center, about 53 minutes, standard distance-based Metro fare, no airport surcharge.

Related pages

Sources

Information checked in October 2026. Schedules, fares and entry rules change, so confirm with the airline or the official source before you travel.