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LHR to PHN: distance & flight time
London (London Heathrow Airport) → Port Huron (St Clair County International Airport)
3,693 mi
5,943 km · 3,209 nm
7h 42m
estimated nonstop flight time
-5h
time difference · heading northwest
See live LHR→PHN fares Phone-only fares on this route — call free
Flight time details
3,693 miles nonstop takes roughly 7h 42m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time set-back when reading arrival times on your ticket.
The two airports
- LHR — London Heathrow Airport · London, United Kingdom
- PHN — St Clair County International Airport · Port Huron, 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 LHR
- LGW · London Gatwick Airport25 mi away
- NHT · RAF Northolt6 mi away
- HYC · Wycombe Air Park18 mi away
- FAB · Farnborough Airport19 mi away
Near PHN
Frequently asked questions
How far is LHR from PHN?
The flight distance from London (LHR) to Port Huron (PHN) is 3,693 miles (5,943 km, 3,209 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LHR to PHN?
A nonstop flight takes about 7h 42m 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 Port Huron?
Port Huron is 5 hours behind London.
What is the cheapest way to fly from LHR to PHN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LHR–PHN that never appear on search engines, with no booking fees.