Heathrow has always punched above its weight for long-haul flying — with no room for a third runway, airlines simply use bigger aircraft on more distant routes. New schedule data for October 2026 through summer 2027 shows the west London hub running 244 long-haul departures a day, more than any other airport on earth, with an average of 217 seats per flight across its widebody operation. And within that network, 11 routes now stretch beyond 14 hours in the air.
The longest of the lot, once it returns, is Qantas' Perth service, timetabled at 17 hours 50 minutes. Nonstop flying is currently suspended because of the conflict affecting Iranian airspace, so the 787-9 stops in Singapore to refuel and swap crews — a technical stop only, meaning you can't book just the Singapore-London leg on it. Nonstops are due back on February 1, launching from Melbourne, with the Perth leg resuming proper nonstop flying shortly after.
Asia dominates the list. China Airlines' Taipei route clocks 16 hours 10 minutes — inflated because it detours around mainland Chinese airspace both ways. Tokyo Haneda comes next at just over 15 hours, served by British Airways, Japan Airlines and ANA with a combined five daily flights. Royal Brunei's Bandar Seri Beganan service matches that at 15 hours, though only until late March, when it reverts to a one-stop via Dubai. Seoul Incheon, Singapore, Hong Kong and Shanghai Pudong all follow within a 15-minute band, with Singapore alone seeing 12 daily departures across BA, Qantas and Singapore Airlines — including the recently returned BA A380.
South America supplies the outliers. British Airways' London-Santiago flight is timetabled at 14 hours 35 minutes outbound, but only until March 27, when it switches to a daily one-stop via Buenos Aires — the first Chile one-stop since 2000. Buenos Aires itself returns to the list on March 28, when BA drops its current Rio de Janeiro tech stop and flies nonstop again for the first time since 2023.
Why does this matter if you're booking? Ultra-long flights mean no connection stress and fewer chances for bags to go astray, but they also mean 14-plus hours in one cabin — so aircraft type and seat choice carry real weight. The list is also a snapshot in time: geopolitics (Iran, the Taiwan Strait), tech stops and seasonal aircraft swaps are all shuffling these times right now, and several routes will look very different by next spring. If you're chasing a specific nonstop — Qantas from Perth, say, or BA to Buenos Aires — it's worth checking the schedule for your exact travel date rather than assuming the current setup holds. Details come via Simple Flying, based on OAG schedule data.
