Distance From Okusa Castle Park Helipad to Washington Dulles International Airport

The distance from Okusa Castle Park Helipad () to Washington Dulles International Airport (IAD) is 6811 miles or 10961 kilometers or 5915 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 Nakagawa ( Japan ) to Dulles ( United States )?

A one-way nonstop (direct) flight between Nakagawa and Dulles takes around 15 hours 39 minutes.

Estimated flight time from Okusa Castle Park Helipad, Nakagawa, Japan to Washington Dulles International Airport, Dulles, United States is 15 hours 39 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 • - IAD

Kilometers		10961 km
Statute Miles		6811 miles
Nautical Miles		5915 nm
Avg. Time of Flight		15 hours 39 minutes

Okusa Castle Park Helipad to Washington Dulles International Airport Flight Route Map - to IAD Flight Path

Location of Okusa Castle Park Helipad & Washington Dulles International Airport is given below.
Click the map to view Nakagawa to Dulles nonstop flight path and travel direction.

Click to see flight route on Google Map between Nakagawa, Japan and Dulles, United States. .

Nonstop flight route between Nakagawa, Japan and Dulles, United States.

Time Difference Between the Airports • - IAD

Time difference between Nakagawa (Japan) and Dulles (United States) is 13 Hours.
Dulles time is 13 Hours behind Nakagawa.

Location	Local Time
Nakagawa (Japan)	2026-03-21, 01:28:42 JST
Dulles (United States)	2026-03-20, 12:28:42 EDT

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

Okusa Castle Park Helipad ( / ) Nakagawa, Japan

Destination

Washington Dulles International Airport (IAD / KIAD) Dulles, United States