Need help booking?
Unpublished phone-only deals available
TOS to HLN: distance & flight time
Tromso (Tromsø Airport,) → Helena (Helena Regional Airport)
4,029 mi
6,484 km · 3,501 nm
8h 22m
estimated nonstop flight time
-8h
time difference · heading northwest
See live TOS→HLN fares Phone-only fares on this route — call free
Flight time details
4,029 miles nonstop takes roughly 8h 22m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time set-back when reading arrival times on your ticket.
The two airports
- TOS — Tromsø Airport, · Tromso, Norway
- 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 TOS
- BDU · Bardufoss Airport44 mi away
- SOJ · Sørkjosen Airport49 mi away
- ANX · Andøya Airport72 mi away
- HAA · Hasvik 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 TOS from HLN?
The flight distance from Tromso (TOS) to Helena (HLN) is 4,029 miles (6,484 km, 3,501 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TOS to HLN?
A nonstop flight takes about 8h 22m 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 Tromso and Helena?
Helena is 8 hours behind Tromso.
What is the cheapest way to fly from TOS to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TOS–HLN that never appear on search engines, with no booking fees.