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HLN to NHT: distance & flight time
Helena (Helena Regional Airport) → Northolt (RAF Northolt)
4,537 mi
7,301 km · 3,942 nm
9h 22m
estimated nonstop flight time
+7h
time difference · heading northeast
See live HLN→NHT fares Phone-only fares on this route — call free
Flight time details
4,537 miles nonstop takes roughly 9h 22m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- HLN — Helena Regional Airport · Helena, United States
- NHT — RAF Northolt · Northolt, United Kingdom
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 NHT
- LHR · London Heathrow Airport6 mi away
- LGW · London Gatwick Airport30 mi away
- HYC · Wycombe Air Park17 mi away
- LCY · London City Airport21 mi away
Frequently asked questions
How far is HLN from NHT?
The flight distance from Helena (HLN) to Northolt (NHT) is 4,537 miles (7,301 km, 3,942 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLN to NHT?
A nonstop flight takes about 9h 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 Helena and Northolt?
Northolt is 7 hours ahead of Helena.
What is the cheapest way to fly from HLN to NHT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLN–NHT that never appear on search engines, with no booking fees.