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Distance between Washington D.C. (DCA) and Seattle, WA (SEA)

Flight distance from Washington D.C. to Seattle (Ronald Reagan Washington National Airport – Seattle–Tacoma International Airport) is 2328 miles / 3747 kilometers / 2023 nautical miles. Estimated flight time is 4 hours 54 minutes.

Driving distance from Washington D.C. (DCA) to Seattle (SEA) is 2751 miles / 4427 kilometers and travel time by car is about 49 hours 30 minutes.

Washington D.C. – Seattle

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2328
Miles
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3747
Kilometers
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2023
Nautical miles

How far is Seattle from Washington D.C.?

There are several ways to calculate distances between Los Angeles and Chicago. Here are two common methods:

Vincenty's formula (applied above)
  • 2328.467 miles
  • 3747.304 kilometers
  • 2023.382 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
  • 2322.777 miles
  • 3738.148 kilometers
  • 2018.438 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

How long does it take to fly from Washington D.C. to Seattle?

Estimated flight time from Ronald Reagan Washington National Airport to Seattle–Tacoma International Airport is 4 hours 54 minutes.

What is the time difference between Washington D.C. and Seattle?

The time difference between Washington D.C. and Seattle is 3 hours. Seattle is 3 hours behind Washington D.C..
Washington D.C. time to Seattle time converter

Flight carbon footprint between Ronald Reagan Washington National Airport (DCA) and Seattle–Tacoma International Airport (SEA)

On average flying from Washington D.C. to Seattle generates about 255 kg of CO2 per passenger, 255 kilograms is equal to 563 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Washington D.C. to Seattle

Shortest flight path between Ronald Reagan Washington National Airport (DCA) and Seattle–Tacoma International Airport (SEA).

Airport information

Origin Ronald Reagan Washington National Airport
City: Washington D.C.
Country: United States Flag of United States
IATA Code: DCA
ICAO Code: KDCA
Coordinates: 38°51′7″N, 77°2′15″W
Destination Seattle–Tacoma International Airport
City: Seattle, WA
Country: United States Flag of United States
IATA Code: SEA
ICAO Code: KSEA
Coordinates: 47°26′56″N, 122°18′32″W

Airlines flying from Washington D.C. (DCA) to Seattle (SEA)

Alaska Airlines