Air distance from Seattle, USA to Nouakchott, Mauritania is 6044.9 Miles (9728.3 Kilometers / 5249.4 Nautical Miles).
Flight duration time from Seattle to Nouakchott is 12 hrs, 33 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.