Caspian Airlines is an airline headquartered in Iranian capital Tehran. Established in 1993, it operates services between Tehran and other major cities in Iran as well as international flights to Turkey and Iraq. Its main base is Mehrabad International Airport, Tehran.

Mehrabad Airport is an airport serving Tehran, the capital city of Iran. Prior to the construction of the larger Imam Khomeini International Airport in 2007, Mehrabad was Tehran's primary airport for both international and domestic traffic, but now serves only domestic flights. Despite this, in 2016, Mehrabad Airport was the busiest airport in Iran in terms of passengers, handling 16,678,351 passengers in total. The airport is also used by the Government of Iran and is one of the bases of the Iranian Air Force.