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IAD to OIR: distance & flight time
Washington (Washington Dulles International Airport) → Okushiri (Okushiri Airport)
6,379 mi
10,266 km · 5,543 nm
12h 58m
estimated nonstop flight time
+13h
time difference · heading northwest
See live IAD→OIR fares Phone-only fares on this route — call free
Flight time details
6,379 miles nonstop takes roughly 12h 58m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- IAD — Washington Dulles International Airport · Washington, United States
- OIR — Okushiri Airport · Okushiri, Japan
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near IAD
Near OIR
- HKD · Hakodate Airport74 mi away
- AOJ · Aomori Airport113 mi away
- OKD · Okadama Airport123 mi away
- CTS · New Chitose Airport125 mi away
Frequently asked questions
How far is IAD from OIR?
The flight distance from Washington (IAD) to Okushiri (OIR) is 6,379 miles (10,266 km, 5,543 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to OIR?
A nonstop flight takes about 12h 58m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Washington and Okushiri?
Okushiri is 13 hours ahead of Washington.
What is the cheapest way to fly from IAD to OIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–OIR that never appear on search engines, with no booking fees.