The majority of flights to Qatar and United Arab Emirates have been cancelled for Monday, as strikes continue in the joint Israeli and US war on Iran.
More than 4,000 flights a day have been cancelled across the region, according to flight tracking service Flightradar24 with hundreds of thousands of passengers affected.
The disruption "will only increase the longer the crisis continues" and it "will have enormous repercussions for the industry," director of communications Ian Petchenik said.
The ongoing airline disruption comes as more than 100,000 Britons have registered their presence in the Middle East with the UK government.
On Monday so far, 79% of global flights to Qatar and 71% of flights to the United Arab Emirates have been cancelled, according to aviation analytics firm Cirium, while 81% of flights to Israel and 92% of flights to Bahrain have also been grounded.
