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Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PHN–LHR that never appear on search engines, with no booking fees.