Beijing has not ordered Chinese carriers to make any flight changes to Iran but is monitoring conditions in the country closely after the crash of a Boeing 737-800 passenger jet in Tehran , according to the Civil Aviation Administration of China. The announcement came after China Southern Airlines , the only mainland-based airline that operates flights to Iran, cancelled a departure from Urumqi in western Xinjiang Uygur autonomous region to Tehran on Wednesday. “The flight was cancelled due to security concerns,” an airline official said on Thursday, adding that passengers could exchange tickets at no extra charge. “Till now, we have not yet received any new notice saying future flights to Iran would be cancelled.” Flight 752, operated by Ukraine International Airlines, left Tehran airport for the Ukrainian capital, Kiev, on Wednesday morning, with 167 passengers and nine crew. It crashed between the cities of Parand and Shahriar in Tehran province, killing everyone on board, including 82 Iranians, 63 Canadians, 10 Swedes and three Britons. Authorities said technical problems were to blame. Ukrainian Boeing 737 crashes in Iran, killing all 176 on board The crash happened hours after Iranian forces launched 16 ballistic missiles into Iraq, targeting an airbase with US personnel and a second facility in response to an American air strike in Iraq last week that killed Major General Qassem Soleimani, the commander of Iran’s elite Quds Force. Media reported that Ukraine’s embassy in Tehran issued a statement that ruled out terrorist involvement in the plane crash but later withdrew it without explanation, prompting questions about whether other possible causes, including terrorism, were being explored. However, Iranian armed forces spokesman Brigadier General Abolfazl Shekarchi rejected the speculation and said that a missile did not bring the plane down. As tensions and uncertainty increased across the Middle East, airlines diverted flights from Iranian airspace. Air France and Dutch carrier KLM both said on Wednesday that they had suspended all flights over Iranian and Iraqi airspace indefinitely. Asian operators that chose to avoid Iranian airspace included Singapore Airlines, Malaysia Airlines and Singaporean low-cost carrier Scoot. Cathay Pacific said it had not flown over Iran and Iraq for “over a year”. Malaysia’s AirAsia said it did not fly over the two countries, while Korean Airlines said its flights did not cross Iran. Australian carrier Qantas said it was altering its London-to-Perth, Australia, route to avoid Iranian and Iraqi airspace until further notice. The longer route meant that Qantas would have to carry fewer passengers and more fuel on a flight that took 40 to 50 minutes longer than usual. Can China be the voice of reason as US, Iran trade missile attacks? Taiwanese carriers China Airlines and EVA Air said they diverted flights to Europe on Wednesday to skirt Iraqi and Iranian airspace. They said route decisions would depend on developments. In July 2014, Malaysia Airlines Flight 17 was shot down over eastern Ukraine, killing all 283 passengers and 15 crew. The incident happened during a conflict in the Donbass region of Ukraine, where ties between Kiev and Moscow had frayed. Additional reporting by Associated Press Purchase the China AI Report 2020 brought to you by SCMP Research and enjoy a 20% discount (original price US$400). This 60-page all new intelligence report gives you first-hand insights and analysis into the latest industry developments and intelligence about China AI. Get exclusive access to our webinars for continuous learning, and interact with China AI executives in live Q&A. Offer valid until 31 March 2020.