"Malaysian airline AirAsia has suspended flights to three destinations in Thailand, Philippines and Iran. Flights from Kuala Lumpur to Tehran will be suspended effective April 23. The last flight to the destination will depart on April 20." (Financial Tribune, "AirAsia Suspends Three Routes," 2/20/2018).
In January 2017, AIRASIA X, the low-cost arm of AirAsia added more flights to Tehran from Kuala Lumpur six months after resuming its flight to the capital of Iran. AirAsia resumed its direct flight to Tehran on June 21, 2016.
"Foreign airlines, including Malaysia's AirAsia and Britain's BMI, are ceasing services to Iran amid its mounting economic problems spurred on by Western sanctions. AirAsia announced it was suspending its four flights a week between Kuala Lumpur and Tehran from next Sunday because of challenging business conditions, notably the 'volatility of the Iranian currency.'" (The Daily Star, "Airlines stop Iran flights as currency crisis bites," 10/8/2012)