Yemen's Houthi ballistic missile and drone strikes have led to the cancellation of 4,071 out of 4,736 scheduled flights (86%) at Riyadh's King Khalid International Airport between October 8 and October 25, according to aviation analytics firm Cirium. The airport, Saudi Arabia's second-busiest, was partially reopened on Sunday after a halt that began on October 10, following repeated strikes including a deadly attack on October 10 that killed 13 people.