A missed 6am flight costs hundreds and cannot be rescheduled by apologising. This is the one morning where over-engineering is proportionate, and where the usual advice to keep it simple does not apply.
The layers, in order of reliability
- A person. Someone who has agreed to call you, in a different time zone if possible. The most reliable backup there is.
- A mains-powered clock or the hotel wake-up call. Survives a flat battery, which no phone alarm does.
- Your phone alarm, charged, across the room.
- A second phone, a travelling companion's or an old handset.
Two of these is the minimum. Three if the flight is expensive or connecting.
Two alarms on one phone is one alarm. A flat battery takes out both.
The time zone trap
This is how people with functioning alarms still miss flights, and it deserves its own section.
- If you crossed a time zone yesterday, check what your phone thinks the time is now, and confirm it has actually updated rather than showing your home time.
- Check the flight time is local departure time, which it always is, and that you have not mentally converted it twice.
- Watch for clocks changing. Daylight saving transitions have caused a lot of missed flights. If you are travelling the weekend the clocks change, verify manually.
- A mechanical travel clock does not update automatically, which is a feature when your phone gets it wrong and a bug when it does not. Set it deliberately.
Hotels
- Book the wake-up call, and book it even if you have alarms. It costs nothing.
- Do not rely on the room's clock radio. The previous guest may have changed it, and the time may be wrong.
- Charge overnight, and check the socket by the bed actually works before you sleep, since hotel sockets are frequently switched or dead.
- If you use a mission alarm, your registered code is probably at home. This is the specific trap for scan-based apps, and it matters.
The mission alarm problem when travelling
Worth being straight about a real limitation of the category, ours included. If your Wake Check code is a kettle in your kitchen, it is useless in a hotel in another country.
Options:
- Register a backup code before you travel, using something you are packing. Mornio allows up to two backups alongside the primary.
- Print a QR code and take it with you, then tape it to the bathroom mirror on arrival. Two seconds of setup and the mission works anywhere.
- Scan something in the room the night before, such as a toiletry item, and register that.
- Or accept the emergency exit exists, and rely on the layered setup above rather than the mission.
Which app suits this
| App | Best for | Minimum iOS |
|---|---|---|
| Mornio | Dismiss-then-relapse, no account, no ads | 26.1 |
| Alarmy | Mission variety and sleep tracking, widest reach | 16.0 |
| SuperAlarm | Seven mission types, cheapest yearly tier | 17.0 |
| Nuj | A financial penalty for failing | 15.0 |
| Erly | Streaks and habit building | 17.6 |
| Apple Clock | Free, and better since iOS 26 | Any |
For travel, reach matters. Any app is secondary to having two devices with separate power.
The night before
- Set every alarm before you start packing, while you can still think.
- Check am versus pm, and the day.
- Confirm the time zone.
- Charge everything, and check the socket works.
- Book the wake-up call.
- Lay out clothes, passport, boarding pass.
- Register a travel-friendly scan code if you use a mission alarm.
And go to bed earlier than feels necessary. Short sleep before an early start is what makes you capable of dismissing an alarm without remembering, which is the actual mechanism behind most missed flights.