NEW DELHI, March 15— Indian has banned flights of military aircraft belonging to any nation over Indian terri tory to East Pakistan, author itative sources said today.

India had barred flights of Pakistani military and civil planes following the hijacking and blowing up of an Indian airliner last month by Kashmiri insurgents at Lahore.

Pilots of civilian planes of other nations flying from West Pakistan to East Pakistan have been told to make a “technical stop” in India, apparently to insure against transport of arms and military forces.