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OIR to GTF: distance & flight time
Okushiri (Okushiri Airport) → Great Falls (Great Falls International Airport)
4,892 mi
7,872 km · 4,251 nm
10h 3m
estimated nonstop flight time
-15h
time difference · heading northeast
See live OIR→GTF fares Phone-only fares on this route — call free
Flight time details
4,892 miles nonstop takes roughly 10h 3m 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
- OIR — Okushiri Airport · Okushiri, 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 OIR
- HKD · Hakodate Airport74 mi away
- AOJ · Aomori Airport113 mi away
- OKD · Okadama Airport123 mi away
- CTS · New Chitose Airport125 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 OIR from GTF?
The flight distance from Okushiri (OIR) to Great Falls (GTF) is 4,892 miles (7,872 km, 4,251 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OIR to GTF?
A nonstop flight takes about 10h 3m 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 Okushiri and Great Falls?
Great Falls is 15 hours behind Okushiri.
What is the cheapest way to fly from OIR to GTF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OIR–GTF that never appear on search engines, with no booking fees.