I need to take a suit on a flight. Would prefer to fold it and pack it in my suitcase, one less thing to carry.

Is it likely to crease? Should I carry it onto the plane?

Luckily, my days for wearing suits are finished! But, as a former frequent business flyer, I put suits in my suitcase all the time. Yes, they may come out with a few wrinkles, but most (nice) hotels have an iron for a quick touch up. Or, just hang them in the shower with the hot water on and the door closed for a short time. Works magic!

Fortunately my days of wearing a suit are also well and truely over , but what i did was turn the jacket completely inside out and then fold it and this minimised the creasing.

Helpful advice, thanks to you both.