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FSI to OIR: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Okushiri (Okushiri Airport)
5,997 mi
9,651 km · 5,211 nm
12h 14m
estimated nonstop flight time
+14h
time difference · heading northwest
See live FSI→OIR fares Phone-only fares on this route — call free
Flight time details
5,997 miles nonstop takes roughly 12h 14m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, 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 FSI
- LAW · Lawton Fort Sill Regional Airport6 mi away
- DUC · Halliburton Field28 mi away
- HBR · Hobart Regional Airport44 mi away
- SPS · Sheppard Air Force Base-Wichita Falls Municipal Airport46 mi away
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 FSI from OIR?
The flight distance from Fort Sill (FSI) to Okushiri (OIR) is 5,997 miles (9,651 km, 5,211 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to OIR?
A nonstop flight takes about 12h 14m 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 Fort Sill and Okushiri?
Okushiri is 14 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to OIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–OIR that never appear on search engines, with no booking fees.