Iranian airlines face global grounding risk as US sanctions wind-down expires September 23, 2026

Every Iranian airline operating internationally is about to hit a wall. At 12:01 a.m. Eastern Time on September 23, 2026, a US Treasury wind-down authorization expires, making any transaction involving sanctioned Iranian carriers illegal without specific OFAC permission. The practical result: a near-total grounding of Iran’s international aviation network. The deadline caps a rapid escalation that began on September 8, when the Treasury Department’s Office of Foreign Assets Control sanctioned 27 Iranian airlines and nine supporting entities under what officials dubbed “Operation Economic Outcast.” The move didn’t just add names to a list. It also suspended longstanding general licenses that had allowed limited aviation activities involving Iran, including payments for overflights, emergency aircraft repairs, and temporary landings by non-Iranian planes. How the shutdown works Sanctions in aviation don’t simply ban flights. They make flights impossible by cutting off the financial and logistical plumbing that keeps planes in the air. Fuel suppliers, airport operators, maintenance providers, insurance companies, and banks all face the threat of secondary sanctions if they do business...