Air distance from Ndjamena, Chad to Portland, USA is 7666.9 Miles (12338.7 Kilometers / 6657.9 Nautical Miles).
15 hrs, 55 mins is the flight duration between Ndjamena and Portland. 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.