Air distance from Seattle, USA to Pretoria, South Africa is 10220.5 Miles (16448.3 Kilometers / 8875.5 Nautical Miles).
Flight duration time from Seattle to Pretoria is 21 hrs, 13 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.