Vols New York JFK (JFK) – London (LHR)

New York JFK to London Heathrow is the eastbound leg of the world's busiest premium transatlantic, served by six carriers with 17+ daily nonstops. Block time is about 7 hours thanks to the prevailing westerly jet stream — the fastest scheduled flights run as short as 6 hours 30 minutes on a good winter day.

The overnight pattern dominates: a 21:00–22:30 JFK departure lands LHR between 09:00 and 11:00 local, putting business travellers in central London for an early lunch. Sleep is the strategy; flat-bed business cabins on BA Club Suite, Virgin Upper Class, Delta One and American Flagship Business are all explicitly designed for the 7-hour overnight crossing. JetBlue Mint and Aer Lingus offer the cheapest lie-flat experience on the route.

The 5-hour eastward time gap (New York at UTC-5/-4, London at UTC+0/+1) is the harder direction for jet lag. Sleep at least 4 hours on board, force daylight exposure on arrival, push through to local bedtime around 22:00 BST — you'll be aligned by day two.