JEDDAH — The administration of King Abdulaziz International Airport said early Thursday, with the improvement of the weather conditions in Riyadh — waning of the dust storm and improvement of horizontal visibility — Saudi Arabian Airlines and Nas Air rescheduled flights heading to King Khaled International Airport in Riyadh. The statement said ten flights were operated to Riyadh. Of these, three flights were on Jumbo 747 planes. This contributed to carrying 70 percent of the delayed passengers.