Which suitcases should you avoid buying for travel: airline tips.

Avoid bright colors for suitcases as this complicates identification. There is a risk that other passengers may mistakenly take your suitcase or it may be stolen.

Change the appearance of your suitcase, especially if it is black, dark blue, or gray (like most people's). Attach a colored tag or ribbon to the handle to avoid confusion upon arrival.

Black colored suitcases are the least desirable as many passengers have suitcases in this color. Distinguishing them from one another takes a lot of time.

Also, pay attention to the quality of the material from which the suitcase is made. Poorly secured suitcases can get damaged during transport.

Some airlines require additional fees for large carry-on suitcases. For example, United Airlines charges $35 for advance baggage in economy class.