International airlines continued suspending flights to and from King Khalid International Airport in Riyadh on Sunday, following its shutdown in the wake of Yemeni military operations carried out under the declared principle of “blockade for blockade.”

EgyptAir announced the suspension of all flights from Cairo and Alexandria to Riyadh. Egypt’s Air Cairo also suspended all flights from Cairo and Sohag to the Saudi capital due to the halt in operations at King Khalid International Airport. Meanwhile, SriLankan Airlines suspended all flights between Riyadh and Colombo until October 18.

The Wall Street Journal reported that the attack on Riyadh airport had prompted airlines to reroute dozens of aircraft and cancel more than 1,000 flights. 

It added that France, Canada, and Germany had warned airlines that flying over Saudi Arabia or large portions of its airspace was no longer safe. Saudi authorities had also ordered the closure of several other airports amid escalating Yemeni attacks.

Citing aviation safety group Osprey Flight Solutions, the newspaper reported that airlines had been advised to avoid Saudi airspace at all altitudes. 

Separately, Flightradar24 data showed renewed suspensions and disruptions to air traffic at King Fahd International Airport in Dammam, with 53 flights canceled since dawn on Sunday.

The disruptions follow a series of flight suspensions announced earlier in October. On October 8, Philippine Airlines and Air India temporarily suspended flights to and from Riyadh. 

Reuters also reported that three Indian airlines had halted flights to the Saudi capital, while Germany’s Lufthansa Group suspended flights to and from Saudi Arabia until October 16.

On October 9, Pakistan International Airlines announced the suspension of flights to Riyadh. Flydubai and Abu Dhabi-based Etihad Airways also temporarily canceled flights to Riyadh and Yanbu in Saudi Arabia, while the European Union Aviation Safety Agency (EASA) advised airlines to avoid additional portions of Saudi airspace.