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HLN to DEF: distance & flight time
Helena (Helena Regional Airport) → Dezful (Dezful Airport)
6,840 mi
11,008 km · 5,944 nm
13h 53m
estimated nonstop flight time
+9.5h
time difference · heading north
See live HLN→DEF fares Phone-only fares on this route — call free
Flight time details
6,840 miles nonstop takes roughly 13h 53m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9.5-hour time gain when reading arrival times on your ticket.
The two airports
- HLN — Helena Regional Airport · Helena, United States
- DEF — Dezful Airport · Dezful, Iran
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 HLN
- BTM · Bert Mooney Airport51 mi away
- GTF · Great Falls International Airport67 mi away
- BZN · Gallatin Field70 mi away
- LVM · Mission Field97 mi away
Near DEF
- KHD · Khoram Abad Airport69 mi away
- AWZ · Ahwaz Airport79 mi away
- OMI · Omidiyeh Airport129 mi away
- MRX · Mahshahr Airport137 mi away
Frequently asked questions
How far is HLN from DEF?
The flight distance from Helena (HLN) to Dezful (DEF) is 6,840 miles (11,008 km, 5,944 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLN to DEF?
A nonstop flight takes about 13h 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 Helena and Dezful?
Dezful is 9.5 hours ahead of Helena.
What is the cheapest way to fly from HLN to DEF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLN–DEF that never appear on search engines, with no booking fees.