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HLN to ADL: distance & flight time

Helena (Helena Regional Airport) → Adelaide (Adelaide International Airport)

8,786 mi
14,140 km · 7,635 nm
17h 42m
estimated nonstop flight time
+15.5h
time difference · heading west
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Flight time details

8,786 miles nonstop takes roughly 17h 42m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15.5-hour time gain when reading arrival times on your ticket.

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The two airports

Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.

Alternate airports can cut this fare

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Frequently asked questions

How far is HLN from ADL?

The flight distance from Helena (HLN) to Adelaide (ADL) is 8,786 miles (14,140 km, 7,635 nautical miles), measured along the great-circle route airlines actually fly.

How long is the flight from HLN to ADL?

A nonstop flight takes about 17h 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 Helena and Adelaide?

Adelaide is 15.5 hours ahead of Helena.

What is the cheapest way to fly from HLN to ADL?

Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLN–ADL that never appear on search engines, with no booking fees.
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