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HLN to IKA: distance & flight time
Helena (Helena Regional Airport) → Tehran (Imam Khomeini International Airport)
6,673 mi
10,740 km · 5,799 nm
13h 33m
estimated nonstop flight time
+9.5h
time difference · heading north
See live HLN→IKA fares Phone-only fares on this route — call free
Flight time details
6,673 miles nonstop takes roughly 13h 33m 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
- IKA — Imam Khomeini International Airport · Tehran, 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 IKA
- THR · Mehrabad International Airport21 mi away
- PYK · Payam International Airport31 mi away
- GZW · Qazvin Airport84 mi away
- NSH · Noshahr Airport88 mi away
Frequently asked questions
How far is HLN from IKA?
The flight distance from Helena (HLN) to Tehran (IKA) is 6,673 miles (10,740 km, 5,799 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLN to IKA?
A nonstop flight takes about 13h 33m 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 Tehran?
Tehran is 9.5 hours ahead of Helena.
What is the cheapest way to fly from HLN to IKA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLN–IKA that never appear on search engines, with no booking fees.