Air distance from Seattle, USA to Karachi, Pakistan is 7437.7 Miles (11969.9 Kilometers / 6458.9 Nautical Miles).
15 hrs, 26 mins is the flight duration between Seattle and Karachi. 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.