Flying can be equal amounts exciting and annoying. One of the best ways to cut down on the annoying aspect is to properly pack. You want to bring enough things on your trip to be prepared, but you also don't want to bring too many items at once. The key to packing is your carry-on bag. This is the only bag you'll be able to access during the flight. This might not matter so much for a shorter trip. But if you're flying more than four or five hours, it starts to matter much more.