New Delhi, May 13 -- The Airports Authority of India (AAI) on Monday issued Notices to Airmen (NOTAMs) for the reopening of 32 airports across northern and western India for civil flight operations three days after their temporary closure was extended until Thursday next (May 15) amid escalating India-Pakistan conflict. A separate NOTAM issued for re-opening the international flight routes said all 25 routes were now available. The decision to reopen airports and routes came after the Indian Air Force (IAF) early on Monday said "no activities" were reported in the border areas. "The night remained largely peaceful across Jammu and Kashmir and other areas along the international border. No incidents have been reported, marking the first calm night in recent days," said the IAF in a statement. The authorities have started reopening the airports, said two officials from the AAI. The NOTAMs accessed by HT said airports under the Mumbai Flight Information Region, such as Mundra, Jamnagar, Rajkot, Porbandar, Kandla, Keshod, and Bhuj, have been reopened while Srinagar, Jammu, Hindon, Sarsawa, Uttarlai, Awantipur, Ambala, Kullu, Ludhiana, Kishangarh, Patiala, Shimla, Kangra, Bathinda, Jaisalmer, Jodhpur, Bikaner, Halwara, Pathankot, Leh, and Chandigarh airports have been notified to resume operations. A NOTAM is a written notice to aviation stakeholders announcing a particular change in the airspace of an airport or a country. "The process of issuing [NOTAMS to] all airports is on-going and will be notified soon," an AAI official said, adding that the resumption of flight operations will depend on respective airlines. "Reopening an airport is not a time-consuming process. The airlines have to plan their flights, which takes time." A second AAI official said the flight routes have been issued, but it will take a couple of hours for the airlines to start using them. The operations at the Delhi airport continued, but some flight schedules were impacted, and security checks took longer due to airspace conditions and enhanced security measures as per the Bureau of Civil Aviation Security (BCAS) orders. The BCAS on Thursday issued an advisory for stricter security protocols at airports across the country amid tensions with Pakistan. The measures will be effective until May 18. They barred visitors from entering airports and suspended the sale of visitor tickets. Additional passenger and baggage checks were conducted at boarding gates for all flights apart from regular security screenings. The airports were closed following precision strikes at nine terrorist targets in Pakistan and Pakistan-occupied Kashmir (PoK) on Wednesday. The targets were hit as part of Operation Sindoor on May 7 in retaliation to the April 22 terrorist attack in Jammu and Kashmir's Pahalgam....