I used this on a two week trip to New Zealand and it worked great. If You were to fully pack this duffel, it WILL NOT fit into an overhead bin. Don't even try it. You are better off checking it in and getting a day pack as a carry on (I used a Kelty Redwing 32 Liter Backpack). That being said , it worked great for traveling the two weeks. I needed something mobile (wheels) and sturdy because this trip involved daily travel to specific places. Plus , I was with a group of 11 other people and luggage was stowed in a trailer. This duffel needed to fit. And , it did.  The issue with security via air-travel is simple. Buy TSA approved locks. The duffel bag is durable.