Like all mountains in Karakoram, Himalaya, Hindu Raj and Hindu Kush Rawalpindi - Islamabad is the gateway to the high mountain of northern Pakistan. Islamabad International airport link the world with dozens of international flights each day. One can reach Chitral by two road links #1 is via the Lawari Pass; One can take a road journey on Grand Truck Road also known as GT road towards NWFP and after about 2 hours turn right to the Mardan Valley before climbing the famous Malakand Pass (this is area where first time British Soldier wear Khaki uniform - Shalwar Kameez, which still the Pakistani soldier wear in this area) the same which link to Swat Valley, one can have lunch in roadside Afghan resturants before turn left to Dir and further to Lawari Pass. All the road journey from Islamabad to Chitral will take about 10 to 12 hours. One can also fly from Peshawar to Chitral. Be prepared for delays due to bad weather, road blockage in the Lawari Pass Section due to landslides.
#2 road link is via the KKH to Gilgit and by the Shandur Pass (the famous and the height Polo ground on earth) to Chitral. Gilgit is about 16 to 18 hours from Islamabad and road journey to Chitral from Gilgit is another day drive.