Some U.S. and other international airlines are keeping a halt on flights to major Middle Eastern airports as global carriers scramble to figure out whether to continue flying to the region amid intensifying conflict between Israel and Iran and military intervention by the U.

The conflict in the Middle East has already led to the closure of huge swathes of crucial airspace. Since Israel launched its offensive, commercial flights have avoided flying over Iran, Iraq, Lebanon, Syria and Jordan.

Airlines diverted more flights in the Middle East on Monday after Iran’s armed forces said the country launched a missile strike on a U.S. military base in Qatar, exacerbating the region’s military co