New report: Why a lie-flat seat won't fix jet lag - and what airlines can do about it

Timeshifter's The Arrival Advantage shows most popular jet lag advice can make it worse, and how airlines can turn jet lag into a strategic edge

NEW YORK, Oct. 27, 2026 /PRNewswire/ -- Timeshifter, the global leader in circadian technology and the company behind the world's most-downloaded jet lag app, today released The Arrival Advantage, a free report on the science of jet lag and the opportunity for airlines. The report explains why common advice and in-flight and lounge amenities fail to address jet lag – and can even make it worse – and how airlines can help passengers adjust to new time zones more quickly and build loyalty in the process.

The report establishes that jet lag is not a sleep problem. It is caused by misalignment between the brain's internal 24-hour circadian clock and the local time zone. Insomnia and daytime sleepiness are among its most obvious symptoms, which is why so many people and products wrongly treat it as a sleep problem. Jet lag has one science-based solution: Individually timed light exposure and light avoidance. And it is concentrated on the journeys airlines value most – long-haul international routes, and the premium and frequent flyers who fly them.

The report's four levers for airlines are:

• A plan for every passenger: A personalized plan sent automatically when a booking crosses three or more time zones. It can be gifted to top-tier members, earned or redeemed with miles, or offered as an ancillary at booking.
• The right light in the lounge: A small "avoid light" area, fitted with bulbs that cost the same as standard ones, so passengers can follow their plan before boarding.
• The right light in the cabin: Cabin lighting scheduled for the majority circadian profile on each route, with seatback screens that show each passenger's individual plan.
• Crew, ground staff, and corporate accounts: Personalized circadian planning for the workforce, and jet lag support as part of employers' duty of care.

"Airlines have optimized nearly every part of the journey except the one thing that follows travelers off the plane: Jet lag," said Mickey Beyer-Clausen, co-founder and CEO of Timeshifter. "No one travels for the flight. They travel for what's waiting when they land: Business meetings, a vacation or family reunion, or a sports competition. The science to help them arrive at their best is established. The airlines that apply it first will set the standard."

Top insights from The Arrival Advantage include:

• A lie-flat seat buys comfort. It does not reset the circadian clock.
• Without intervention, the clock adjusts by only about one hour, or one time zone, per day – so a New York–Dubai trip takes over a week to fully adapt to.
• Well-meant advice like "sleep as much as you can on the plane," "eat when the locals eat," or "go for a jog in the morning" won't help passengers and can make jet lag worse.
• Loyalty programs reward members with miles, lounge access, and upgrades, but nothing for how members feel on arrival.

"Jet lag is a circadian disruption, and it can only be resolved by resetting the circadian clock with individually timed light exposure and light avoidance," said Dr. Steven W. Lockley, co-founder and Chief Scientist of Timeshifter, a former Harvard Medical School faculty member for more than 20 years and advisor to NASA and Formula 1. "Light at the wrong biological time shifts the circadian clock in the wrong direction, which is why generic advice so often makes jet lag worse."

Several global airlines already apply the science through a partnership with Timeshifter. The CDC Yellow Book, the reference for healthcare professionals advising international travelers, covers the science of jet lag and has featured Timeshifter since 2024.

Download the full report, The Arrival Advantage, for free.

Dr. Steven W. Lockley and Mickey Beyer-Clausen are available for interviews; contact [email protected].

Logos, photos, and app images are available in the Timeshifter press kit.

About Timeshifter
Timeshifter is the global leader in circadian technology, translating circadian science into breakthrough products and solutions that improve human performance, safety, and health. In 2018, Timeshifter made jet lag history with its first product – now the most-downloaded jet lag app in the world, trusted by more than 1.8 million users. Building on this success, Timeshifter introduced a groundbreaking app to help shift workers improve their sleep, safety, health, and quality of life. Timeshifter's concierge services help astronauts, NBA players, Formula 1 drivers, and Olympic athletes perform at their best. Learn more at timeshifter.com.

SOURCE Timeshifter Inc.