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OKO to FSI: distance & flight time
Yokota (Yokota Air Base) → Fort Sill (Henry Post Army Air Field (Fort Sill))
6,314 mi
10,161 km · 5,487 nm
12h 51m
estimated nonstop flight time
-14h
time difference · heading northeast
See live OKO→FSI fares Phone-only fares on this route — call free
Flight time details
6,314 miles nonstop takes roughly 12h 51m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time set-back when reading arrival times on your ticket.
The two airports
- OKO — Yokota Air Base · Yokota, Japan
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
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 OKO
- HND · Tokyo Haneda International Airport28 mi away
- NRT · Narita International Airport58 mi away
- NJA · Atsugi Naval Air Facility21 mi away
- IBR · Hyakuri Airport67 mi away
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
Frequently asked questions
How far is OKO from FSI?
The flight distance from Yokota (OKO) to Fort Sill (FSI) is 6,314 miles (10,161 km, 5,487 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OKO to FSI?
A nonstop flight takes about 12h 51m 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 Yokota and Fort Sill?
Fort Sill is 14 hours behind Yokota.
What is the cheapest way to fly from OKO to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OKO–FSI that never appear on search engines, with no booking fees.