15 Jan 2026: Iranian airspace (OIIX/Tehran FIR) has reopened after a sudden short-notice closure overnight that lasted around five hours and triggered diversions and cancellations. No official explanation has been given publicly. Flight tracking shows overflights resuming, but most operators continue to avoid Iranian airspace due to elevated risk and existing airspace warnings. If you’re operating in Iran or neighbouring FIRs, the bigger risk picture hasn’t changed - ongoing regional tensions and the risk of further short-notice airspace closures.
The
primary risk in Iranian airspace is misidentification of civil aircraft by air defence systems during periods of heightened tension. Iran has previously operated advanced air defence and conducted missile activity close to busy international routes with little warning to civil aviation, and the shoot-down of Ukraine International Airlines flight 752 over Tehran in Jan 2020 shows how quickly the situation can deteriorate.
Several states continue to warn against operations in Iranian airspace, and the US still bans N-reg aircraft. Most operators have been avoiding Iran and Israel since the Oct 2024 rocket attacks between the two countries. Most Middle East transits have been operating south via Egypt/Saudi instead.
Major events:Jan 2026: Renewed nationwide unrest in Iran, increasing the risk of short-notice airspace closures and security-driven disruptions in the OIIX/Tehran FIR.
June 2025: Israel and Iran exchanged missile strikes, prompting widespread airspace avoidance and renewed airspace warnings.
Oct 2024: Israel and Iran carried out missile attacks against each other, leading most international operators to avoid both airspaces.
Apr 2024: Israel launched a rocket attack on Iran. Iran temporarily closed the western part of the OIIX/Tehran FIR.
Jan 2024: Pakistan carried out air strikes into southeastern Iran after Iranian strikes in Pakistan the previous day, raising the risk of escalation and spillover airspace restrictions.
Sep 2023: Multiple reports of GPS spoofing affecting aircraft in northern Iran, particularly near the Iraq border.
Jul 2023: Four countries initiated legal action against Iran at the UN court over the Jan 2020 shoot-down of Ukraine International Airlines flight 752, citing ongoing concerns about air defence safeguards.
Jan 2020: Iranian air defence forces shot down Ukraine International Airlines flight 752 over Tehran after misidentifying the aircraft as a hostile target. Hours earlier, the US FAA issued emergency Notams banning US operators from overflying Iran and Iraq following Iranian missile strikes on US bases in Iraq.
Jun 2019: Iran shot down a US military unmanned aircraft over the Gulf of Oman using a surface-to-air missile system.
Since 2017: Iran has conducted multiple ballistic missile test launches without issuing Notams or advance warning to civil aviation.