The Civil Aviation Organization (CAO) of the Islamic Republic of Iran officially announced on April 19, 2026, a comprehensive, three-phase plan to reopen the country’s national airspace to commercial and civil traffic. The decision follows a period of restricted operations and total closures initiated during a period of heightened regional military activity involving Israel and the United States. According to the CAO’s Director-General, Mohammad Mohammadi-Bakhsh, the phased restoration is intended to ensure the safety of civil aviation while signaling a transition toward regional stabilization and the resumption of international transit obligations.
Under the first phase of the plan, which commenced at 08:00 local time on Sunday, domestic flight routes and regional corridors connecting Tehran to neighboring capitals, including Baghdad and Ankara, have been restored. The second phase, scheduled to begin on April 22, will allow for the resumption of long-haul international flights from Imam Khomeini International Airport (IKIA) to major hubs in Europe and Asia. The final phase, contingent upon a security assessment by the Supreme National Security Council, aims for a total lifting of restrictions by the end of the month, including the reopening of western flight paths that have been dormant for several weeks.
Geopolitical context is critical to this decision. The closure was originally implemented following a series of cross-border strikes and naval incidents in the Persian Gulf earlier this month. This reopening follows diplomatic mediation led by the Sultanate of Oman and Qatar, which resulted in a tentative de-escalation agreement between Tehran and Western powers. Iranian Foreign Ministry spokesperson Nasser Kanaani stated that the reopening reflects Iran’s commitment to international norms of transit and regional peace, provided that sovereign boundaries are respected by external military forces. The move is seen by regional observers as a de-escalatory signal toward the United States and Israel.
The International Civil Aviation Organization (ICAO) has been notified of the updated NOTAMs (Notice to Air Missions) issued by Iranian authorities. Prior to this announcement, major international carriers had rerouted flights through Saudi Arabian and Azerbaijani airspace, adding significant fuel costs and flight time to East-West routes. The CAO reported that during the peak of the restrictions, over 400 daily transit flights were diverted, impacting the revenue of the Iranian Airport and Air Navigation Company, which typically collects over $200 million annually in overflight fees. The restoration of these routes is expected to alleviate congestion in neighboring flight information regions.
While the reopening is a significant step, the United States Department of State and the Israeli Defense Ministry have maintained a cautious stance. A spokesperson for the U.S. National Security Council noted that while the reduction in airspace restrictions is a positive technical development, the underlying security architecture remains under review. Regional analysts point to the 2024 tensions as a historical precedent, noting that phased reopenings have previously served as barometers for broader diplomatic breakthroughs in the Middle East. The CAO has confirmed that it will maintain a high state of readiness and will continue to coordinate with the military to monitor the security of the restored corridors.