Air distance from Ottawa Canada to Billings Montana is 1586.4 Miles (2553.1 Kilometers / 1377.7 Nautical Miles).
Flight duration time from Ottawa Canada to Billings Montana is 3 hrs, 17 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.