This fits perfectly into the domestic United carryon bin. I haven't tried to fly internationally with it, but it's smaller than my old international carryon, so i don't anticipate any problems.

The handle extends easily, and it's super easy to walk it through the airport. The wheels swivel in just the right way to push or guide it along with only minimal pressure. I especially appreciate the handle on the side, which makes loading it into an overhead bin very easy. I was able to pack for a solid week's holiday with plenty of room for dirty laundry and souvenirs. It feels quite sturdy, and I'm expecting to get many great trips out of it.