Long-haul flight checklist
How to get through a long flight: choosing a seat, water and snacks, a sleep kit, moving and dry air, offline entertainment and a time-zone plan.

[ ] Choose your seat deliberately
    Aisle if you plan to move; window if you plan to sleep. Exit rows give legroom but often do not recline.
[ ] Check in early and save the boarding pass
    Online check-in opens early and gives you the choice of seats. Save the pass offline, not only in your email.
[ ] Buy water after security and drink regularly
    Dry cabin air dehydrates faster than it feels. Drinking on a schedule rather than on thirst is the rule that works.
[ ] Pack your own snack
    The gaps between services can be hours. Nuts, a bar, fruit — mindful of import rules at your destination.
[ ] Pack a sleep kit
    Earplugs, an eye mask, a neck pillow, a warm layer, socks. This is what turns a seat into somewhere you can sleep.
[ ] Prepare for dry air
    Lip balm, moisturiser, drops if your doctor prescribes them, glasses instead of lenses on a long flight.
[ ] Get up and move every couple of hours
    Walk the cabin, flex your legs and ankles in the seat. Immobility is the main source of swelling and fatigue.
[ ] Dress in loose layers
    Cabins swing between hot and cold. Loose shoes matter most: feet swell on almost everyone.
[ ] Keep medication in the cabin
    In original packaging and with a margin for delays. With chronic conditions, ask your doctor how the schedule shifts across time zones.
[ ] Download everything in advance
    Films, books, music, an offline map of the arrival city. On-board internet may be paid, slow or absent.
[ ] Charge devices and take a power bank
    Power sockets are not everywhere and do not always work. The power bank goes in the cabin; it must not be checked.
[ ] Start adjusting to the time zone in advance
    Shift your sleep by an hour or so a couple of days before. On board, live by the destination time.
[ ] Go easy on alcohol and heavy food
    Both worsen dehydration and ruin sleep. You feel it more after landing than during the flight.
[ ] Plan a child's activities hour by hour
    Several small activities rather than one big one, water, snacks, a change of clothes. And explain what will happen.
[ ] Keep the first day after arrival free
    Hold out until the local evening and get into daylight. Important meetings that day are a bad idea.

Checklist from Unload: https://unloads.me/c/long-haul-flight