Air distance from Seattle, USA to Dushanbe, Tajikistan is 6480.2 Miles (10428.8 Kilometers / 5627.4 Nautical Miles).
13 hrs, 27 mins is the flight duration between Seattle and Dushanbe. 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.