🍫 Protein Bars

Nothing at all — protein bars are solid food and are permitted in carry-on and checked baggage everywhere without restriction. Screeners do not stop or question solid food items like protein bars, and they will pass through the X-ray without any issue.

Aviation security screening presents no issues with protein bars, but customs rules are a separate matter. Countries with strict biosecurity regimes — most notably Australia and New Zealand — may restrict certain food products containing meat, dairy, or plant material. Most standard commercial protein bars are processed and packaged to a level that clears customs in these countries, but it is worth checking the specific customs rules for your destination if you are carrying large quantities or less common ingredients.

Airlines do not restrict passengers from eating their own solid snacks onboard, including protein bars. Some carriers serving meals may ask passengers to wait until a service is complete before eating their own food, but this is a courtesy request rather than a rule. Nut-containing bars can occasionally be an issue on airlines that operate nut-free flights for allergy reasons — if you see a nut-allergy announcement before boarding, it is worth checking whether your bar contains nuts.

Protein bars travel well in any part of your bag — they are solid, packaged, and sturdy enough to handle the pressure of being packed. Keeping a few in an outer pocket of your carry-on means easy access during the flight without having to dig through your bag. If you are travelling to warm destinations or through hot connecting airports, choose bars without chocolate coatings, which can melt and make a mess.