I pack mine in a hard roller carry on, stuffed with the original stuffing and put them in their dust bags. The carry on always goes in the overhead locker and I ensure any items I may need on the flight are in a separate bag so I don’t need to unlock the roller bag with my bags. The carry on is quite deep so I can fit 2 Chanel medium flaps in each side without them being crushed. I usually pack some jumpers or something soft around the bags to cushion them. I always travel like this and my bags are always fine. I prefer to put the bags in a hard carry on instead of a larger tote bag as I feel like they are more secure going through security. Hope this helps!