The US and Israeli attacks on Iran, which began on Saturday, followed by Iranian counterattacks on Gulf states and Israel, have led to the closure of the airspace of several countries.
That has caused the cancellation of at least 12,903 flights between Saturday and Monday, according to Cirium, an aviation data analysis firm, or about 40 percent of planned flights.
Some airlines on Tuesday resumed a limited number of scheduled flights, but evacuation flights are still set to ferry more stranded passengers out of the region.
Several EU states have already begun flying out their citizens without asking for assistance from Brussels.
Lahbib estimated that there are a total of some 500,000 EU citizens in the Middle East, but not all of those are expected to want to leave.
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