# International restrictions on Iranian aviation and finance > Live situation record from CLSTR: https://clstr.news/situations/international-restrictions-on-iranian-aviation-and-finance > Updated: 2026-09-19T09:36:10.000Z. Sources: 11. Developments: 3. The Iranian aviation and financial sectors are facing increasing international restrictions. In mid-September 2026, Mahan Air announced the suspension of several international routes, including flights to Muscat, Oman, as well as Istanbul and Ankara, Turkey, following decisions by aviation authorities in those nations. These aviation restrictions have been accompanied by developments in the financial sector. The Turkish Banking Regulation and Supervision Agency revoked the license of the Istanbul branch of Iran’s Bank Melli, citing laws regarding the protection of depositor rights and financial stability. On September 8, 2026, the United States Treasury Department implemented broad new sanctions targeting 27 Iranian airlines and various entities involved in providing aircraft, parts, technology, and services. These measures aim to reduce Iran’s aviation capabilities by restricting insurance, refueling, cargo, and ticket sales. While Mahan Air cited local aviation authorities for its flight suspensions, the move follows these U.S. actions. Iranian Foreign Ministry spokesperson Ismail Baghaei dismissed the U.S. accusations as a form of projection, claiming the U.S. is ‘describing its own actions.’ Further financial pressure has been noted through recent U.S. Treasury moves targeting Golden Global Investment Bank in Turkey and branches of Banque Misr in the United Arab Emirates. These developments occur amid broader efforts to increase economic isolation on Tehran and prevent the circumvention of international restrictions. ## Claims - The US Treasury Department announced sanctions against 36 targets, including 27 Iranian airlines, on September 8, 2026. (corroborated by 2 sources) - Mahan Air suspended flights to Muscat starting September 17, and to Istanbul and Ankara starting September 21. (corroborated by 2 sources) - The sanctions target all remaining Iranian airlines and related services including insurance, refueling, and cargo. (single source) - Iranian Foreign Ministry spokesperson Ismail Baghaei stated that US accusations against Iran are a form of projection. (single source) - The new sanctions increase the risk for non-Iranian companies and countries to cooperate with Iran's aviation sector. (single source) ## Timeline ### 2026-09-19: Turkey revokes Bank Melli license and halts Mahan Air flights Turkey has revoked the license of Iran’s Bank Melli in Istanbul and halted Mahan Air flights through Turkish cities amid intensifying US efforts to increase economic isolation on Tehran. 3 sources. https://clstr.news/cluster/turkey-revokes-bank-melli-license-and-halts-mahan-air-flights ### 2026-09-18: US sanctions target Iranian aviation industry and 27 airlines The US Treasury has sanctioned 27 Iranian airlines and related aviation services, leading to flight suspensions by Mahan Air to Turkey and Oman and increasing economic pressure on Iran. 4 sources. https://clstr.news/cluster/us-sanctions-target-iranian-aviation-industry-and-airlines ### 2026-09-16: Mahan Air suspends flights to Turkey and Oman Mahan Air is suspending flights to Muscat, Istanbul, and Ankara due to regulatory decisions in Turkey and Oman, amid reports of expanding aviation restrictions on Iranian carriers in Georgia. 3 sources. https://clstr.news/cluster/mahan-air-suspends-flights-to-turkey-and-oman --- Cite as: International restrictions on Iranian aviation and finance. CLSTR, https://clstr.news/situations/international-restrictions-on-iranian-aviation-and-finance