Indian Airlines currently has flights from and to:

Agartala
Agatti
Ahmedabad
Aizawl
Allahabad
Amritsar
Aurangabad
Bagdogra
Bangalore
Bhopal
Bhubaneshwar
Calicut
Chandigarh
Chennai (Madras)
Cochin(Kochi)
Coimbatore
Dehradun
Delhi
Dibrugarh
Dimapur
Dubai
Gaya
Goa
Guwahati
Gwalior
Hyderabad
Imphal
Jammu
Jamnagar
Jodhpur
Jorhat
Kabul
Kanpur
Kathmandu
Khajuraho
Kolkata(Calcutta)
Kulu
Kuwait
Leh
Lilabari
Lucknow
LUDHIANA
Madurai
Male
Mangalore
Mumbai (Bombay)
Muscat
Nagpur
Pathankot
Patna
Portblair
Pune
Raipur
Rajkot
Ranchi
Sharjah
Shillong
Silchar
Srinagar
Surat
Tezpur
Thiruvananthapuram
Tirupati
Udaipur
Vadodra
Varanasi
Vishakhapatnam(Vizag)
Yangoon