There is no flight on Tuesdays, Fridays (except on July 03) and Saturdays. Direct flights from Urumqi to Islamabad are available every Wednesdays and Sundays. The flight departs at 09:30 (Beijing time) and arrives at 10:00 (local time) and the whole journey takes two hours and a half. Flight No. CZ6007 (China Southern Airlines). Otherwise, you need transfer.