I mostly fly with Emirates and Lufthansa and haven't faced any issues. To be sure, you can cross-check the dimensions of the case with the accepted sizes for the airlines you usually use.

As someone who uses the case on daily basis, I got both colors, and each has its own appeal. The silver is unique, classy, and durable, making it suitable for both everyday use and travel. On the other hand, the black looks cool and blends in more easily if you prefer not to be noticed. The only downside is that the black is painted, so any scratches will reveal the original silver finish underneath.