But why do airlines care about umbrellas anyway? It's not like they're going to take over the plane or anything! Apparently, it's all about safety and making sure that umbrellas don't become projectiles in the air.
Now, you might be thinking, "What about folding umbrellas?" Well, those are a different story altogether. Some airlines are okay with folding umbrellas, while others still say no way. It's all about the size and type of umbrella.
And then there are the quirky exceptions. Like, did you know that some airlines allow golf umbrellas as carry ons? Yep, it's true! They're usually bigger and more sturdy than regular umbrellas, but hey, if you're a golfer, you might just get away with it.
Carry On Luggage Umbrella at Donita Humphrey blog