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OKO to GTF: distance & flight time
Yokota (Yokota Air Base) → Great Falls (Great Falls International Airport)
5,220 mi
8,401 km · 4,536 nm
10h 42m
estimated nonstop flight time
-15h
time difference · heading northeast
See live OKO→GTF fares Phone-only fares on this route — call free
Flight time details
5,220 miles nonstop takes roughly 10h 42m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time set-back when reading arrival times on your ticket.
The two airports
- OKO — Yokota Air Base · Yokota, Japan
- GTF — Great Falls International Airport · Great Falls, 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 GTF
- HLN · Helena Regional Airport67 mi away
- CTB · Cut Bank International Airport91 mi away
- LWT · Lewistown Municipal Airport94 mi away
- HVR · Havre City County Airport104 mi away
Frequently asked questions
How far is OKO from GTF?
The flight distance from Yokota (OKO) to Great Falls (GTF) is 5,220 miles (8,401 km, 4,536 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OKO to GTF?
A nonstop flight takes about 10h 42m 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 Great Falls?
Great Falls is 15 hours behind Yokota.
What is the cheapest way to fly from OKO to GTF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OKO–GTF that never appear on search engines, with no booking fees.