US sanctions targeting Iranian airlines, effective from September 23, 2026, have prompted multiple neighboring states including the UAE, Azerbaijan, Georgia, Iraq, and Oman to suspend services to Iranian carriers over secondary sanctions risks, sharply reducing Iran's international connectivity. Iranian officials have denied plans for military retaliation while pursuing negotiations to lift the measures and reserving non-military options against compliant airports. This occurs amid the broader US-Israel-Iran conflict that began in February 2026, during which Iranian authorities previously imposed temporary airspace restrictions and closures. European aviation safety advisories against operations in Iranian FIR Tehran remain active through late September 2026, with recent escalations in the Strait of Hormuz adding to regional aviation uncertainty.