Global airlines including British Airways, Qantas, KLM and Singapore Airlines are re-routing flights to avoid parts of Iran-controlled airspace, and all US carriers have been told to avoid the area.
Flight paths over the Strait of Hormuz and Gulf of Oman are being re-routed over concerns for the safety of commercial airlines after Iran used a surface-to-air missile to shoot down a US drone on Wednesday.
The incident prompted the US Federal Aviation Administration (FAA) to issue an emergency order temporarily banning carriers flying over the area.
The FAA said flight tracking devices showed the nearest civil aircraft was operating within around 45 nautical miles of the unmanned aircraft when it was shot down, according to Reuters.
“There were numerous civil aviation aircraft operating in the area at the time of the intercept,” the FAA said.
It added: “The threat of a civil aircraft shootdown in southern Iran is real.”