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TNF to HLN: distance & flight time
Toussous-le-noble (Toussus-le-Noble Airport) → Helena (Helena Regional Airport)
4,754 mi
7,651 km · 4,131 nm
9h 47m
estimated nonstop flight time
-8h
time difference · heading northwest
See live TNF→HLN fares Phone-only fares on this route — call free
Flight time details
4,754 miles nonstop takes roughly 9h 47m 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
- TNF — Toussus-le-Noble Airport · Toussous-le-noble, France
- 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 TNF
- CDG · Charles de Gaulle International Airport27 mi away
- VIY · Villacoublay-Vélizy (BA 107) Air Base4 mi away
- ORY · Paris-Orly Airport13 mi away
- LBG · Paris-Le Bourget Airport21 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 TNF from HLN?
The flight distance from Toussous-le-noble (TNF) to Helena (HLN) is 4,754 miles (7,651 km, 4,131 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TNF to HLN?
A nonstop flight takes about 9h 47m 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 Toussous-le-noble and Helena?
Helena is 8 hours behind Toussous-le-noble.
What is the cheapest way to fly from TNF to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TNF–HLN that never appear on search engines, with no booking fees.