A 24-hour flight that moves the frontier
On 28 July 2026, an Airbus A350-1000ULR landed at Toulouse-Blagnac after 24 hours and 24 minutes of non-stop flying from Melbourne — roughly 12,460 nautical miles in a single leg across the Pacific, North America and the Atlantic. Five days earlier, the same aircraft had flown Toulouse to Melbourne in 19 hours 13 minutes. Both trips beat the airliner endurance record held since November 2005 by a Boeing 777-200LR, which linked Hong Kong to London in 22 hours 42 minutes.
What Qantas is preparing for 2027
These flights validate the "Project Sunrise" programme. Airbus is due to deliver the first A350-1000ULR in April 2027; Qantas, which ordered twelve of them, will then open a non-stop Sydney-London route of around twenty hours. The question is no longer technical but physiological: can a passenger cross ten time zones in one go and arrive functional?
Why this matters on your Paris-Tokyo too
Because the protocols designed for these extreme flights are already filtering down to ordinary long-haul, and because the sky has never been busier. On 23 July 2026, 153,359 commercial flights were recorded in twenty-four hours — an all-time high, up 11.8% on the July 2023 peak. In Europe, Eurocontrol logged an average of 30,474 daily flights in 2025 against 29,207 a year earlier. More traffic and tighter connections mean your own planning has to be sharper.
Departure time is your first sleep decision
The instinct is to sort flights by price. That is the mistake that costs you the first two days of the trip: a fare €60 cheaper that drops you off at 6am after a sleepless night burns a full day on the ground.
Eastbound and westbound are opposite problems
Flying west artificially stretches your day: the body adapts more easily, you simply stay up a little longer. Flying east means falling asleep before your internal clock asks for it — the hard direction. Either way, French health authorities advise shifting bedtime and wake-up by one hour a day over the three days before departure, in the direction of travel.
Aim to land late in the day
The highest-return rule fits in one line: pick a flight that lands in the late afternoon or early evening at destination. You then move straight into a light dinner and a real night on local time, instead of dragging through a first day in a fog. On Asian routes, that usually means accepting an evening departure from Europe.
Pick your seat for sleep, not just for legroom
Window or aisle: what actually changes
On a night flight the window wins: you control the light, you have something to lean on, and nobody wakes you to get out. On a daytime flight where the goal is staying awake and moving, the aisle takes over. Avoid rows next to the galleys and lavatories — noisy and lit all night — and beware the last row, whose seats often do not recline.
With children, the night is prepared on the ground
Travelling as a family, book seats together at purchase rather than hoping for a gate reshuffle, and give the window to whoever sleeps worst. Bassinets, fixed to bulkhead rows, go to the first to ask — usually by phone, never automatically. A bedtime ritual identical to the one at home, even compressed, does more for onboard sleep than any gadget.
Onboard: light, meals, movement, hydration
This is the quartet Qantas has studied since 2015 with the University of Sydney's Charles Perkins Centre. On the 2019 research flights to Sydney from New York and London, twenty-three volunteer passengers wearing sensors followed a calibrated sequence of menus, lighting, sleep and movement. The industrial result is visible in the A350 ULR: twelve cabin lighting scenes, with spectral irradiances calculated to support circadian adaptation.
Reproducing the protocol in economy
You do not have the twelve scenes, but you have the principle. Set your watch to arrival time at take-off and eat on destination hours, even if that means skipping a tray. Eye mask during the local "night", strong light and open window shade during its day. Stand up every two to three hours and walk for a few minutes.
Hydration, the most underrated move
Cabin air is very dry, and dehydration amplifies everything: fatigue, headaches, slower recovery. Drink water steadily rather than waiting for thirst. Conversely, alcohol markedly worsens in-flight dehydration and fragments sleep — the take-off drink is a false good idea. Coffee deserves the same caution past the midpoint of the flight.
Melatonin and the first 72 hours
What health authorities actually say
EFSA recognises that melatonin helps ease the effects of jet lag, from 0.5 mg taken just before bedtime, on the day of departure and the first days at destination. France's ANSES recommends not exceeding 2 mg per day and keeping the supplement to occasional use. It calls for medical advice first for anyone on medication — notably anticoagulants, antihypertensives, immunosuppressants or antiepileptics — and nothing for children without a prescription.
The first three days set the tone
On arrival, natural light remains the most powerful and cheapest tool: go out and walk, especially in the morning if you flew east. Hold local meal times, cap naps at twenty minutes before 3pm, and accept that resynchronising takes roughly one day per time zone crossed. For families, that is also the argument for longer, less frequent trips: crossing eight time zones for five nights means spending most of the holiday recovering.