The Lowepro Fastpack 250 is one of my favorite bags for airline travel. Even though it’s compact, it easily holds my Canon 5D Mark II, 24-105 f/4, 70-200 f/4, 50 f/1.4, 1.4x extender, flash, and more. Plus I have room for my laptop and personal gear. When I’m on the plane, I can stash the Fastpack in the overhead bin or beneath the seat in front of me.
Here’s a trick to make this experience even more enjoyable: “back buckle” the belly band to keep it tight against the bag. The belly band is great when you’re hiking, but it can get in the way when stashing your Fastpack in overhead bins and other tight places. If you buckle the belly band back against the pack, everything is nice and tight for your travel.
Give it a try. It works great!