Distance From Kohnan Airport to Washington Dulles International Airport

The distance from Kohnan Airport () to Washington Dulles International Airport (IAD) is 6974 miles or 11224 kilometers or 6056 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 Okayama ( Japan ) to Dulles ( United States )?

A one-way nonstop (direct) flight between Okayama and Dulles takes around 16 hours 2 minutes.

Estimated flight time from Kohnan Airport, Okayama, Japan to Washington Dulles International Airport, Dulles, United States is 16 hours 2 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		11224 km
Statute Miles		6974 miles
Nautical Miles		6056 nm
Avg. Time of Flight		16 hours 2 minutes

Kohnan Airport to Washington Dulles International Airport Flight Route Map - to IAD Flight Path

Location of Kohnan Airport & Washington Dulles International Airport is given below.
Click the map to view Okayama to Dulles nonstop flight path and travel direction.

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

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

Time Difference Between the Airports • - IAD

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

Location	Local Time
Okayama (Japan)	2026-03-18, 23:20:06 JST
Dulles (United States)	2026-03-18, 10:20:06 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

Kohnan Airport ( / RJBK) Okayama, Japan

Destination

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