The Federal Aviation Administration (FAA) has advised U.S. airlines to be cautious when operating flights in or near Saudi Arabia due to recent deadly attacks attributed to Yemen's Iran-backed Houthis, which have resulted in the closure of the airport in the Saudi capital.

As of Monday, King Khalid International Airport in Riyadh remains closed following a series of attacks that began last week. The situation escalated on Saturday when a projectile struck a passenger terminal, leading to at least 12 fatalities and over 300 injuries.

In response to the violence, several airlines have suspended flights to the airport, with some halting operations for the remainder of the week.

The U.S., Australia, and other nations have also warned their citizens against traveling to the region amid these safety concerns.

On Sunday, the FAA issued a statement urging pilots to 'exercise caution' when flying in or around Saudi Arabia due to potential safety-of-flight risks linked to ongoing military activities and navigation system issues. The agency noted that these threats could pose risks to aircraft at all altitudes.

The FAA's advisory is set to remain in effect until December 10.

While most U.S. airlines do not operate flights to Saudi Arabia, Delta Air Lines is scheduled to commence its first nonstop service from Atlanta to Riyadh on October 23. Delta CEO Ed Bastian stated in an interview prior to the missile attack that 'safety is going to make the call' regarding the flight's operation. As of Sunday evening, a spokesperson confirmed that Delta had not altered its plans.