5. If flying to the US, the free Mobile Passport app (iOS/Android) lets you fill out a declaration electronically, skipping lines at 25 airports.
6. If your flight is cancelled, skip the rush to the counter and call the customer line to re-book the next flight.
7. Bose’s noise-masking sleep buds (£229.95) use white noise to blot out the cabin buzz entirely. Peace at last.
8. Kayak (iOS /Android) has an easy app to measure bag dimensions, plus size limits for a number of big airlines.
9. For peace of mind, SkyGuru (iOS/Android) is a neat app that uses sensors to explain any in-flight bumps and to help predict any turbulence.