According to official media, airport operations in Tehran and other parts of Iran resumed on Monday following a brief halt brought on by an Israeli air strike that raised tensions in the area.
Flights were halted after Iran used drones and missiles to launch its first-ever direct attack on Israeli territory late on Saturday. The attack was in retaliation for a deadly airstrike on Tehran's consulate in Damascus on April 1 that was widely believed to have been carried out by Israel.
According to a report from the official IRNA news agency, "Flights at Imam Khomeini International Airport in Tehran were back to normal as of 6:00 a.m. (0230 GMT)."
According to IRNA, all of the nation's domestic airports, including Shiraz in the south, Tabriz in the northwest, and Mashhad in the northeast, are "operating as scheduled" and include Tehran's Mehrabad airport.
Some airlines have halted flights to the area in response to the Iranian attack and worries about possible Israeli retaliation.
Israel needs to make clear what form its defense might take.
While some airlines, like Australian carrier Qantas, have rerouted their aircraft to avoid Iran's airspace, German airline Lufthansa has suspended its flights to and from Iran.
The attack also closed the airspace of several Middle Eastern nations, including Iraq, Jordan, and Lebanon, for the night of Saturday and Sunday; however, all of these countries have reopened.