Air distance from Kathmandu, Nepal to Monterrey, Mexico is 8769.5 Miles (14113.1 Kilometers / 7615.4 Nautical Miles).
Flight duration time from Kathmandu to Monterrey is 18 hrs, 12 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.