Flying with a groom’s suit? Skip the checked bag and pack it in a garment...
https://www.click-bookmark.win/flying-with-a-groom-s-suit-we-ll-walk-you-through-why-carrying-it-on-beats
Flying with a groom’s suit? Skip the checked bag and pack it in a garment duffel or garment bag as your carry-on to keep it wrinkle-free