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LCY to HLN: distance & flight time
London (London City Airport) → Helena (Helena Regional Airport)
4,553 mi
7,328 km · 3,957 nm
9h 24m
estimated nonstop flight time
-7h
time difference · heading northwest
See live LCY→HLN fares Phone-only fares on this route — call free
Flight time details
4,553 miles nonstop takes roughly 9h 24m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- LCY — London City Airport · London, United Kingdom
- 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 LCY
- LHR · London Heathrow Airport22 mi away
- LGW · London Gatwick Airport27 mi away
- BQH · London Biggin Hill Airport12 mi away
- NHT · RAF Northolt21 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 LCY from HLN?
The flight distance from London (LCY) to Helena (HLN) is 4,553 miles (7,328 km, 3,957 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LCY to HLN?
A nonstop flight takes about 9h 24m 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 London and Helena?
Helena is 7 hours behind London.
What is the cheapest way to fly from LCY to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LCY–HLN that never appear on search engines, with no booking fees.