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OKO to GRK: distance & flight time
Yokota (Yokota Air Base) → Killeen (Robert Gray Army Air Field Airport)
6,517 mi
10,488 km · 5,663 nm
13h 15m
estimated nonstop flight time
-14h
time difference · heading northeast
See live OKO→GRK fares Phone-only fares on this route — call free
Flight time details
6,517 miles nonstop takes roughly 13h 15m 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
- GRK — Robert Gray Army Air Field Airport · Killeen, 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 GRK
- HLR · Hood Army Air Field8 mi away
- AUS · Austin Bergstrom International Airport61 mi away
- TPL · Draughon Miller Central Texas Regional Airport26 mi away
- ACT · Waco Regional Airport52 mi away
Frequently asked questions
How far is OKO from GRK?
The flight distance from Yokota (OKO) to Killeen (GRK) is 6,517 miles (10,488 km, 5,663 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OKO to GRK?
A nonstop flight takes about 13h 15m 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 Killeen?
Killeen is 14 hours behind Yokota.
What is the cheapest way to fly from OKO to GRK?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OKO–GRK that never appear on search engines, with no booking fees.