PIA flies to over 28 destinations. Most PIA flights are for destinations in Saudi Arabia but PIA has international flights to several other countries as well, like for example United Arab Emirates and Pakistan. From its main base in Islamabad 3 flights depart every week. Many people who look for PIA tickets look for flights to Dubai and Jeddah.
Utiket is a good place to start looking for PIA flights as we can compare all flights by PIA with hundreds of other airlines and dozens of booking websites.