Approximately 5957.86 Km or 3702.04 Mi
3,671 miles direct, but greater depending on flight routing.
Approximately 7 hours from IAD to LHR, and approximately 8 hours from LHR to IAD.
At this time, there are no non-stop flights from LHR (London Heathrow) to MCO (Orlando), but the shortest flight with a stop over in IAD (Washington, DC's Dulles Airport) is just over 12 hours. The return would be around 11 hours due to the prevailing tail winds.
London Heathrow
London Heathrow Airport was created in 1929.
By the title of the airport, London Heathrow Airport, it serves London and south-east England.
Well depends where you are in Virginia - but fortunately Virginia does have a major International airport - Washington Dulles. From there it is approximately 9 hours to Paris Charles De Gaulle airport
1) London Heathrow 2) London Gatwick 3) London Stansted 4) Manchester 5) London Luton 6) Birmingham 7) Edinburgh 8) Glasgow 9) Bristol 10) Liverpool (John Lennon)
Heathrow Airport is in London Zone 6.
First comes London Heathrow Airport, followed by London Gatwick Airport, Manchester Airport, London Stansted Airport, London Luton Airport.
London Heathrow
London has the worlds busiest airports in terms of people. And from those, my guess would be that London Heathrow is the busiest airport in Londonit is heathrow