Iran Air, branded as The Airline of the Islamic Republic of Iran (Persian: هواپیمايی جمهوری اسلامی ایران‎‎ Havâpeymâyiye Jomhuriye Eslâmiye Irân), is the flag carrier airline of Iran and the oldest airline in the Middle East. Its main bases are the Tehran Imam Khomeini International Airport for international flights and Tehran Mehrabad Airport for domestic flights .[7] It is headquartered on the grounds of Mehrabad Airport in Tehran. The airline has a subsidiary for cargo services, called Iran Air Cargo, that operates scheduled and charter services. Iran Air transports 6 million passengers annually.[8] Iran Air is also referred to by its pre-revolution Persian acronym, Homa (Havâpeymâyiye Melliye Irân), which is also the name of a mythical Persian griffin, Homa.