Iran's Tehran Flight Information Region remains subject to partial restrictions and widespread international avoidance amid ongoing regional military tensions stemming from earlier US and Israeli strikes on Iranian targets and subsequent Iranian responses. On October 12, 2026, Tehran implemented a brief full closure lasting roughly five hours, citing security concerns tied to heightened US-Iran frictions and domestic protests, before reopening to permitted flights. European and US regulators have extended avoidance advisories through mid-November 2026, citing risks of misidentification by air defenses, while sanctions continue to limit Iranian carriers' operations. Traders monitor diplomatic signals, potential further strikes, and regulatory review dates for any shift toward sustained full closure or normalization.