There is a chance that your bike will get damaged or lost during transit, just like any other piece of luggage. When I fly with my bike I always purchase travelers insurance through World Nomad. The 'Explorer' tier includes $5,000 for damage to personal items, including sporting equipment. This may not cover the full cost of your bike, but it will cover some. If you want full coverage, Sundays Insurance provides coverage for athletes' equipment in the US and abroad. Airlines will also reimburse you for damage, but you typically have to submit a claim within a few days of your flight, which is really annoying. Don't let the fear of damage keep you from taking your bike on a plane. The risk is worth it! Taking in the views on a mountain biking trip to Oaxaca, Mexico