“Additionally Iranian and Iraqi airspace will be bypassed by all Lufthansa Group Airlines until further notice,” the airline says. The Lufthansa Group says it is “monitoring the situation closely and will continue to assess the situation in the coming days. Affected passengers will be automatically rebooked and proactively contacted.”

Iran closed its airspace to commercial flights early Thursday morning amid threats of an imminent attack from the United States.

During the restriction, aircraft were barred from entering or transiting Tehran’s airspace unless they were international flights arriving in or departing from the capital with special authorisation f...