Khan boarded a private chartered plane to leave for Karachi. Senior party leaders including PTI vice president Shah Mehmood Qureshi and Jahangir Tareen also accompanied the PTI chief.
According to ARY News correspondent, the jet boarded by Khan is owned by Jahangir Tareen.
The PTI chief had reached Benazir International Aiprort, Islamabad at 1.27pm from his Bani Gala residence.
According to sources, Khan will fly back to Islamabad at 8.30pm after attending and addressing his supporters in Karachi.