The height of full face helmet comes pretty close to the width of the check-in bag, So not much space to put padding around, and the way checked-in bags are thrown around, I am bit skeptical about putting helmet in the check-in bags. The carry on bag isn't big enough to house the full face helmet, so having it as another piece would be perfect. But, not sure if they would allow it. I have emailed them. haven't heard anything so far. That won't be me. It's 8 hour flight. I guess, open face are a bit smaller. A Full face helmet won't fit inside my carry on baggage.