1 - Iran Air
Iranian Airways" was established in May 1944, Its first passenger flight after the World War II from Tehran to Mashhad. Within a period of 17 years (1945-1962) this airline developed into a major domestic Route with a few international flights. With other countries and also securing more welfare and comfort for Iranians, provided the conditions for the board of ministers to ratify a proposal suggested by road minister to establish a national Airline corporate on February 10th, 1961. Following this decision, on February 24th, 1961 "Iranian Airways" and " Pars Air " merged to form a new airline as " IranAir" with the acronyms and the symbol of "HOMA" bird and this new airline commenced its activities in April 1962.
You can see the flight routs of Iran Air at below image
2 - Mahan Air
Domestic routs of Mahan Air in Iran as below Image
3 - Aseman Air Line