Will my pack fit carry on dimensions?

Each airline carrier will have different policies, so make sure you know your flight’s carry on dimensions before starting. The only make or break dimension of your pack will be the length of your aluminum stays, since your pack isn’t able to compress smaller than that length without removing them (see “How long are the aluminum stays for each torso size?” if you don’t know). Beyond that whether or not you’ll have to check your luggage will ultimately depend on how much space your gear takes up inside the pack. If you have to go that route, it’s not a bad idea to have a travel cover or box for the pack to avoid potential damage done by airport conveyors.