Distance From South Capitol Street Heliport to Seattle–Tacoma International Airport

The distance from South Capitol Street Heliport () to Seattle–Tacoma International Airport (SEA) is 2324 miles or 3740 kilometers or 2018 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Washington ( United States ) to Seattle ( United States )?

A one-way nonstop (direct) flight between Washington and Seattle takes around 5 hours 20 minutes.

Estimated flight time from South Capitol Street Heliport, Washington, United States to Seattle–Tacoma International Airport, Seattle, United States is 5 hours 20 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • - SEA

Kilometers		3740 km
Statute Miles		2324 miles
Nautical Miles		2018 nm
Avg. Time of Flight		5 hours 20 minutes

South Capitol Street Heliport to Seattle–Tacoma International Airport Flight Route Map - to SEA Flight Path

Location of South Capitol Street Heliport & Seattle–Tacoma International Airport is given below.
Click the map to view Washington to Seattle nonstop flight path and travel direction.

Click to see flight route on Google Map between Washington, United States and Seattle, United States. .

Nonstop flight route between Washington, United States and Seattle, United States.

Time Difference Between the Airports • - SEA

Time difference between Washington (United States) and Seattle (United States) is 2 Hours.
Seattle time is 2 Hours behind Washington.

Location	Local Time
Washington (United States)	2026-09-23, 19:19:59 EDT
Seattle (United States)	2026-09-23, 17:19:59 MDT

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

South Capitol Street Heliport ( / ) Washington, United States

Destination

Seattle–Tacoma International Airport (SEA / KSEA) Seattle, United States