Pakistan extends airspace closure for Indian planes till May 24

Pakistan extended the closure of its airspace for all Indian-registered civilian and military aircraft until May 24, 2026 (2359 hrs UTC on May 23, i.e., 0530...

What Happened

Pakistan extended the closure of its airspace for all Indian-registered civilian and military aircraft until May 24, 2026 (2359 hrs UTC on May 23, i.e., 0530 hrs IST on May 24).
The extension was notified via a NOTAM (Notice to Airmen) issued by the Pakistan Airport Authority (PAA), applying to all aircraft registered in India or operated, owned, or leased by Indian airlines and operators.
Pakistan's airspace has been closed to Indian aircraft since April 24, 2025 — initially imposed in the aftermath of the Pahalgam terror attack of April 22, 2025. India, in turn, closed its airspace to Pakistani aircraft from April 30, 2025.
The ban has been extended repeatedly on a month-to-month basis, with the April 21, 2026 NOTAM being the latest extension.
Indian carriers are compelled to take significantly longer alternative routes for international flights that would otherwise transit Pakistani airspace (particularly routes to West Asia, Europe, and North America), resulting in higher fuel costs, longer flight times, and operational losses estimated in billions of rupees.

Static Topic Bridges

Chicago Convention, 1944 and Airspace Sovereignty

The Convention on International Civil Aviation, commonly called the Chicago Convention, was signed on December 7, 1944 in Chicago by 52 states. It entered into force on April 4, 1947, the same day the International Civil Aviation Organization (ICAO) came into being as its permanent institutional mechanism. Article 1 of the Chicago Convention establishes the foundational principle: "The contracting States recognize that every State has complete and exclusive sovereignty over the airspace above its territory." This means no foreign aircraft — civil or military — may enter a state's airspace without permission.

Chicago Convention signed: December 7, 1944; entered into force: April 4, 1947
Current signatories: 193 states (all UN members)
Article 1: Complete and exclusive sovereignty of every state over its airspace
Article 5: Non-scheduled flights of contracting states may fly into or transit without prior permission, subject to Article 9 restrictions
Article 9: States may restrict or prohibit flight over certain zones for military necessity or public safety
ICAO (International Civil Aviation Organization): UN specialised agency headquartered in Montreal; sets global aviation standards (SARPs — Standards and Recommended Practices)

Connection to this news: Pakistan's airspace closure is a direct exercise of its sovereignty rights under Article 1 of the Chicago Convention. While the closure is legally permissible, its extension on a repeated basis and the use of a NOTAM mechanism to notify the aviation community illustrates how geopolitical tensions are translated into actionable aviation restrictions under international aviation law.

NOTAM (Notice to Airmen) System

A NOTAM (Notice to Airmen) is an official notice filed with an aviation authority containing information essential to personnel concerned with flight operations. NOTAMs are issued for a wide range of conditions: restricted airspace, runway closures, navigational aid outages, or — as in this case — blanket airspace closures for specific categories of aircraft. They are disseminated through the ICAO global NOTAM system and are a standard mechanism under the Chicago Convention framework for communicating temporary or permanent operational restrictions.

NOTAM: standardised notice mechanism for aviation operational restrictions
NOTAMs are published in specific formats (NOTAM A, B, C, D, E) with defined validity periods
Pakistan Airport Authority (PAA) is the issuing authority for Pakistan's NOTAM
The NOTAM in question covered: all Indian-registered aircraft, Indian airline-operated, owned, or leased aircraft, and Indian military flights
NOTAMs form part of the Aeronautical Information Service (AIS) regulated under ICAO Annex 15

Connection to this news: Pakistan's repeated NOTAM extensions — rather than a single indefinite closure — reflect both the tactical use of the mechanism and the uncertainty around when the bilateral diplomatic impasse may resolve. Each NOTAM extension is a discrete legal act under ICAO norms.

Bilateral Air Services Agreements (ASAs) and International Aviation Law

Bilateral Air Services Agreements govern the commercial aspects of international aviation between two countries — including which airlines may operate, on which routes, and at what capacity. They are underpinned by the Chicago Convention's "freedoms of the air" framework. The "freedom to overfly" (1st freedom of the air) — the right of an aircraft of one country to fly over the territory of another without landing — is foundational for international aviation economics and route planning. Denial of overflight rights is permitted under international law but imposes substantial economic costs on the affected carriers.

Five Freedoms of the Air: established under the Chicago Convention framework (1st: overflight; 2nd: technical stop; 3rd-5th: commercial traffic rights)
India and Pakistan had a bilateral Air Services Agreement; its operational status is effectively suspended during this closure
Air India is estimated to face approximately $600 million in additional costs if the airspace ban persists for a full year
Affected routes: flights from India to West Asia, Europe, and North America routed via Pakistan are most impacted
Pakistan's airspace closure mirrors a previous closure during the 2019 Balakot crisis (closed Feb 27 – July 16, 2019)

Connection to this news: The airspace closure illustrates the link between bilateral political relations and economic consequences for civilian aviation. Unlike 2019, the 2025–26 closure has now entered its second year, with cumulative costs significantly exceeding those of the 2019 episode, raising questions about sustainable rerouting and the role of ICAO arbitration mechanisms in resolving such disputes.

Key Facts & Data

Pakistan airspace closure for Indian aircraft: initiated April 24, 2025
India airspace closure for Pakistani aircraft: initiated April 30, 2025
Current extension: April 21 to May 23, 2026 (2359 UTC) — i.e., 0530 IST May 24, 2026
Trigger: Pahalgam terror attack (April 22, 2025; 26 killed)
NOTAM issued by: Pakistan Airport Authority (PAA)
Chicago Convention: signed December 7, 1944; in force April 4, 1947; Article 1 — complete airspace sovereignty
ICAO headquartered: Montreal, Canada
Estimated additional cost to Air India if ban lasts one year: ~$600 million
2019 precedent: Pakistan closed airspace from February 27 to July 16, 2019 (post-Balakot)
Affected flight routes: India to Europe, West Asia, North America via Pakistan airspace corridor