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OKI to HLN: distance & flight time
Oki Island (Oki Airport) → Helena (Helena Regional Airport)
5,432 mi
8,742 km · 4,720 nm
11h 7m
estimated nonstop flight time
-15h
time difference · heading northeast
See live OKI→HLN fares Phone-only fares on this route — call free
Flight time details
5,432 miles nonstop takes roughly 11h 7m 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
- OKI — Oki Airport · Oki Island, Japan
- HLN — Helena Regional Airport · Helena, 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 OKI
- YGJ · Miho Yonago Airport48 mi away
- IZO · Izumo Airport58 mi away
- TTJ · Tottori Airport65 mi away
- TJH · Tajima Airport94 mi away
Near HLN
- BTM · Bert Mooney Airport51 mi away
- GTF · Great Falls International Airport67 mi away
- BZN · Gallatin Field70 mi away
- LVM · Mission Field97 mi away
Frequently asked questions
How far is OKI from HLN?
The flight distance from Oki Island (OKI) to Helena (HLN) is 5,432 miles (8,742 km, 4,720 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OKI to HLN?
A nonstop flight takes about 11h 7m 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 Oki Island and Helena?
Helena is 15 hours behind Oki Island.
What is the cheapest way to fly from OKI to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OKI–HLN that never appear on search engines, with no booking fees.