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ISM to LHR: distance & flight time
Kissimmee (Kissimmee Gateway Airport) → London (London Heathrow Airport)
4,340 mi
6,985 km · 3,772 nm
8h 59m
estimated nonstop flight time
+5h
time difference · heading northeast
See live ISM→LHR fares Phone-only fares on this route — call free
Flight time details
4,340 miles nonstop takes roughly 8h 59m 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
- ISM — Kissimmee Gateway Airport · Kissimmee, 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 ISM
- MCO · Orlando International Airport12 mi away
- ORL · Orlando Executive Airport19 mi away
- GIF · Winter Haven Regional Airport - Gilbert Field25 mi away
- TPA · Tampa International Airport70 mi away
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 ISM from LHR?
The flight distance from Kissimmee (ISM) to London (LHR) is 4,340 miles (6,985 km, 3,772 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISM to LHR?
A nonstop flight takes about 8h 59m 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 Kissimmee and London?
London is 5 hours ahead of Kissimmee.
What is the cheapest way to fly from ISM to LHR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISM–LHR that never appear on search engines, with no booking fees.