Bicycle transport bags are great because they're a great compacted storage case for your bike when you travel. What I learned the hard way is that you can just carry your bicycle fully attached onto a plane, but instead you'll have to get a bicycle traveling case for it. Honestly, it's for the best too, because a bicycle traveling case will compact your bicycle so it's safe to travel and not taking up the whole aisle of the plane.Also, if you're worried about putting your bike in a bicycle travel bag,you shouldn't. bicycle travel bags have padding to protect your bike from the bumps and bruises of the road, and bicycle travel cases have internal pockets so you have plenty of places to store things. Also, if it makes you feel better, a lot of professional cyclists carry their bicycle in a bike transport bag because a bicycle travel case is the best way to go. Bike travel cases are probably a competitive cyclist's best friend. A bike travel case told me that.