Air distance from Leon, Mexico to Sian, China is 8142.3 Miles (13103.8 Kilometers / 7070.8 Nautical Miles).
Flight duration time from Leon to Sian is 16 hrs, 54 mins. This is the In-The-Air flight time. You should also add the taxi time, airport wait times and possible delays due to bad weather, etc. for the total flight duration time.