After Islamabad removed access restrictions, Indian airlines resumed flight operations on normal routes to Europe and other west-bound destinations over the Pakistan airspace on Tuesday.
"After cancellation of NOTAMS by Pakistan and India in the early hours of Tuesday, there are no restrictions on airspaces of both countries, flights have started using the closed air routes, bringing a significant relief for airlines," the Ministry of Civil Aviation said on Twitter.
Earlier in the day, Pakistan's aviation authority in a NOTAM said: "With immediate effect, Pakistan airspace is open for all type of civilian traffic on published ATS routes."
"The Indian government approached us asking to open the airspace. We conveyed our concerns that first India must withdraw its fighter planes placed forward," Pakistan aviation secretary Shahrukh Nusrat had been quoted as saying by local media agencies. India had previously requested Pakistan to lift the ban and allow commercial airlines to make use of its airspace. Pakistan, however, had said that it would do so only if India agreed to remove its fighter jets from forward bases along the border.
In March, Pakistan had partially opened its airspace but kept it closed for Indian flights. The closure of Pakistan's airspace following airstrikes by the Indian Air Force's February 26 Balakot strike took a heavy financial toll on national carrier Air India.