Airport baggage handlers don't actually try to break your luggage on purpose but they don't exactly handle it with care either. If you care about your $5000 bike when you travel abroad, invest in a reliable hard case bike box like the BikeBoxAlan. It's the same box that the pros use when travelling and the only one with a ten year guarantee. Fits all standard bikes including 29″ers. Comes with wheels so you don't have to carry it.