Nothing leaves your phone
No account, no subscription, no analytics. Your sleep and your flights stay on this device. The web app has no online step at all; in the mobile apps the one optional online step is looking up a flight number.
Works in airplane mode
Free · No account
Fly far.
Land ready.
Easy2Fly turns your whole flight into an hour-by-hour plan: when to get light, when to dim it, when to sleep, when to stop the coffee. It runs on your device, so it works in airplane mode, with no account and no tracking.
9:40
San Francisco → London
Day 2 of 4 · London time
NowBright light
until 11:00 · 1 h 20 min left
Caffeine OK until 14:00Why?Done
Next 3 hours
Everyday lightin 1 h 20 min
11:00–17:00
Today
Bright light
Everyday light
Low light
Sleep
Melatonin
Caffeine
Plan
Trips
You
A plan for your body clock
Tell it when you usually sleep and whether you run early or late. Easy2Fly times light, sleep, melatonin and caffeine to where your body clock is right now.
Ready before the wheels are up
The planner, thousands of airports and every time zone live in the app. Add a flight in airplane mode and the plan appears.
01 · The experience
Built for the day you actually travel.
One calm screen tells you what to do now, what comes next, and why.
Now, then next
The first screen answers one question: what should I do right now? Below it, the next three hours.
Every step explains itself
Tap any instruction for the reason and the practical how: sunglasses on, lights up, mask down, phone dim.
Any flight, any zone
Search airports offline, including zones that sit off the hour, like Delhi and Kathmandu. Daylight-saving changes at either end are handled for you.
Your sleep, your plan
Early bird, night owl, a 2 a.m. bedtime, a six-hour sleeper. Melatonin and caffeine are opt-in, with plain cautions.
Reminders that work in the air
On iPhone, Android and Mac the app schedules reminders on the device, so they fire in airplane mode. On the web, send the plan to any calendar.
Change it any time
Flight delayed? Move it in two taps. There is no deadline, no locked setting, and no deleting and re-adding.
02 · How it works
From boarding pass to body clock in three steps.
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Tell it how you sleep
Your usual bedtime, how long you sleep, early bird or night owl. It takes ten seconds.
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Add your flight
Pick two airports and two times, or a flight number in the mobile apps. Easy2Fly works out the clock change for you.
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Follow the next three hours
Get light, dim it, take melatonin if you chose it, sleep. Tick steps off if that helps. Skip them if it doesn't.
03 · The science, plainly
Light moves the clock.
The rest helps.
Your body clock follows light. Fly east and it has to move earlier, which is hard. Fly west and it moves later, which is easier. A plan cannot skip the clock change. It can make the change much kinder.
Light
Light leads the plan. Bright light after your body's temperature low moves your clock earlier. Before it, later.
Melatonin
Never required. A low dose at the right time helps sleep and speeds the move. Mistimed, it works against you.
Caffeine
It keeps you alert. It does not move your clock. Small amounts, spread out, and none close to bedtime.
Sleep
Placed where it helps, including on the plane, with a reason for each block.
For healthy adults. Not medical advice. Not for pilots or crew on duty.
- Your sleep, your flights and your settings live on this device. There is no Easy2Fly server to send them to.
- This web app has no online step at all: flights are entered by hand, as two airports and two times. In the mobile apps there is one optional extra, looking up a flight number, and it runs from the device.
- Airports, time zones and the planner ship inside the app, so everything else works in airplane mode.
- No analytics, no advertising identifiers, no third-party scripts or fonts. That includes this website.
- The first run asks for nothing. Reminders ask permission only if you switch them on.
05 · Get the app
Open it now.
Install it if you like.
The web app works today in any current browser and keeps working offline once it has loaded. Add it to your Home Screen on iPhone or Android, or build the native apps from source.
Open the web app-
Open Easy2Fly
Go to easy2fly.app/app in Safari, Chrome or Edge.
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Add it to your Home Screen
On iPhone, tap Share, then Add to Home Screen. On Android, tap Install app.
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Add a flight, then go offline
Switch on airplane mode and open it again. The plan is still there.
Credits
Built on public science and open data.
The planner implements published circadian-science rules for light, melatonin and caffeine. Airport data comes from OurAirports (public domain) and mwgg/Airports (MIT). Easy2Fly is independent software. No other jet-lag app endorses or is affiliated with it.
Read the third-party noticesEasy2Fly
Land ready.
Free, offline and private, for the flight you are booking right now.