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OOM to HLN: distance & flight time
Cooma (Cooma Snowy Mountains Airport) → Helena (Helena Regional Airport)
8,370 mi
13,471 km · 7,274 nm
16h 53m
estimated nonstop flight time
-16h
time difference · heading northeast
See live OOM→HLN fares Phone-only fares on this route — call free
Flight time details
8,370 miles nonstop takes roughly 16h 53m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time set-back when reading arrival times on your ticket.
The two airports
- OOM — Cooma Snowy Mountains Airport · Cooma, Australia
- 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 OOM
- CYG · Corryong Airport61 mi away
- MIM · Merimbula Airport66 mi away
- CBR · Canberra International Airport70 mi away
- MYA · Moruya Airport71 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 OOM from HLN?
The flight distance from Cooma (OOM) to Helena (HLN) is 8,370 miles (13,471 km, 7,274 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OOM to HLN?
A nonstop flight takes about 16h 53m 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 Cooma and Helena?
Helena is 16 hours behind Cooma.
What is the cheapest way to fly from OOM to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OOM–HLN that never appear on search engines, with no booking fees.