Is Iran's Airspace Open or Closed? November 2026 Update: Tehran FIR Status, the Dates to Watch and the 'Full Closure by October 31' Question

Short answer for 7 November 2026: Iran's airspace is open, in the sense that the Tehran FIR (OIIX) is accepting overflights, and closed, in the sense that the regulators of the United States, the European Union, France, Germany, Italy, the United Kingdom and Canada all tell their airlines not to enter it. Which applies to your flight depends on whose aircraft you are on.

This is the November edition of our monthly status post; the [October update](/blog/iran-airspace-open-or-closed-october-2026-update) is there for comparison. This month is built around numbers and dates: what each notice says, when it expires, and how the prediction market behind the odd search phrase 'Iran full airspace closure by October 31 2026' has moved. Sources were read on 7 November 2026: safeairspace.net, the EASA bulletin as reported by avi-go.com on 2 October, the Rio Times report of 4 November on the Polymarket contract, and the Wego Middle East disruptions live blog.

Status at a glance, 7 November 2026

• **Iran's own position:** the OIIX/Tehran FIR has reopened to overflights. safeairspace.net (Iran page updated October 2026) describes it as reopened but with multiple countries advising against entry, and rates Iran at Level One, Do Not Fly.
• **EASA (EU operators):** CZIB-2026-04-R2, first issued 8 July 2026, revised 30 September 2026: do not operate in the Tehran FIR at any altitude. Valid until 16 November 2026.
• **United States:** FAA SFAR 117 prohibits US operators, 3 October 2024 to 31 October 2027. The one notice here that will not change in November.
• **France:** NOTAM LFFF F2223/26, issued 28 October 2026, valid to 12 November 2026: French operators not to enter Iranian airspace at all.
• **Germany:** NOTAM EDWW B0746/26, 11 September to 12 November 2026.
• **Italy:** NOTAM LIRR E2212/26, 1 September to 29 November 2026.
• **United Kingdom and Canada:** a standing recommendation not to enter in the UK AIP (ENR 1.1), and a Canadian AIC; safeairspace notes both rest on older notices.
• **Stated primary risk:** misidentification by air-defence systems, the hazard that has governed the FIR since the strikes of 28 February 2026.

What changed since the October update

Less than the headlines suggested. In formal airspace status, nothing moved: no new EASA revision, no Iranian closure NOTAM, no reopening by any Western regulator. Three things did.

First, France reissued: LFFF F2223/26 was issued on 28 October and runs only to 12 November. Second, the prediction market fell sharply. Per the Rio Times on 4 November, the Polymarket contract on Iran announcing a full airspace closure by 30 November 2026 was priced at 18% for Yes, down 14 points in 24 hours and 11 points over the week, from 41% on 22 October. A companion 31 December contract stood at about 28.5%, with roughly US$11 million traded. The report tied the drop to Iranian negotiators meeting Qatari mediators in Doha on 31 October, and to US officials describing strikes on Qeshm Island as defensive.

Third, the region got noisier without Iran closing. The Wego live blog logged, on 31 October, sanctions on Iranian aviation and land border closures by several countries; on 4 November, a Houthi claim of a missile strike on Riyadh airport with a warning to airlines to avoid Saudi airspace (a warning, not a closure); and on 7 November, a US State Department alert about 'possible flight cancellations, airspace closures, and other travel disruptions'. None reported any change to the Tehran FIR.

The four dates to watch in November 2026

1. **12 November:** the French (LFFF F2223/26) and German (EDWW B0746/26) NOTAMs both expire. Expect renewals; a quiet lapse by either would be the first Western softening of the year.
2. **16 November:** EASA CZIB-2026-04-R2 expires. EASA has extended this bulletin before, from R0 in July to R2 at the end of September. A revision that narrowed the advice, say to particular altitudes or sectors, would matter more than a plain extension.
3. **29 November:** the Italian NOTAM (LIRR E2212/26) expires, the longest-dated national notice.
4. **30 November:** the Polymarket contract resolves. If Iran has not announced a suspension across all of its airspace or the whole Tehran FIR, Yes loses. Partial closures do not count; the market's own example of a qualifying event is the full closure after the 28 February strikes.

Why people search 'Iran full airspace closure by October 31 2026'

That phrase is not a news event. It is the wording of a Polymarket prediction-market contract on Iran announcing a full airspace closure, and the people searching it are mostly traders checking odds. The contracts live today resolve on 30 November and 31 December 2026; the October deadline has passed, and nothing in the sources read for this post records an Iranian announcement of a full closure during October. For any contract's resolution, Polymarket's page is the authority, not this post.

The market's definition is the useful part. 'Full closure' means Iran itself suspending all civil traffic across its airspace or the Tehran FIR, a high bar and a different question from whether your airline will fly over Iran. For a Western carrier the answer was already no, and an 18% chance of a formal closure changes nothing about it.

Who is flying through, and who is routing around

The Western bulletins bind their own operators. Carriers from the Gulf, Turkey, Central Asia, South Asia and Iran itself answer to their own regulators, and the FIR's reopening is what lets them use it. Which of them do so on a given day is each airline's own risk decision; we have not verified individual routings from the sources read for this post, so we are not naming any.

For the airlines that stay out, the detours are the same as in October: north through Turkey, the Caucasus and Central Asia, or south over Egypt, Saudi Arabia and the Arabian Sea. Our guide to [alternative flight routes avoiding Middle East airspace](/blog/alternative-flight-routes-avoiding-middle-east-airspace) compares the two, [Europe to India routes without Iranian airspace](/blog/europe-to-india-routes-without-iranian-airspace) works through city pairs, and [the Tehran FIR explained](/blog/tehran-fir-flight-information-region-explained) covers why OIIX is so hard to avoid. The November wrinkle: the Houthi warning about Saudi airspace gives the southern corridor its own uncertainty this month.

What a full closure would actually mean for passengers

A formal Iranian closure would hit the airlines currently using the FIR, not those already routing around it:

• Carriers using the FIR would shift into the northern and southern corridors within hours: longer block times and, on the longest sectors, fuel stops or payload limits rather than cancellations.
• Flights to and from Iran itself would stop; anyone ticketed into Tehran should read [refund and rebooking rights when airspace closes](/blog/flight-cancelled-airspace-closure-refund-rebooking-rights).
• Neighbouring FIRs would come under review; in 2026 Iraq's status has tended to move with Iran's.
• The Western bulletins would not change, because for their operators the airspace was already off limits.

How to check your own flight

A monthly post cannot be current on the day you fly; this check takes ten minutes.

1. Identify the operating airline and its home regulator. A codeshare on a Gulf carrier follows that carrier's rules, not those of the European airline whose number is on the ticket.
2. Check the regulator's notice: the EASA CZIB list, the FAA, or the national NOTAMs above. Our guide to [where to check current Iran airspace NOTAMs](/blog/iran-airspace-notam-where-to-check-current-notices) has the direct sources.
3. Look at the last few days of your flight number on a tracking site. A track that bends around the FIR is the system working; one that crosses it tells you the airline has made its own assessment.
4. Read the signals, not the headlines: the dates above, plus the indicators in [will Iran's airspace reopen: signals to watch](/blog/will-iran-airspace-reopen-signals-to-watch).

Frequently asked questions

Is Iran airspace open now?

As of 7 November 2026, yes for overflights: Iran has not closed the Tehran FIR, and safeairspace.net records it as reopened. Whether your flight uses it depends on the airline's regulator; US, EU, UK and Canadian carriers are told to stay out.

Is Iran airspace closed?

Not by Iran. It is effectively closed to Western operators by their own regulators' notices, which next expire on 12, 16 and 29 November 2026.

What are the Tehran FIR and OIIX?

OIIX is the ICAO code for the Tehran Flight Information Region, the airspace Iran manages for air traffic purposes, which is why bulletins name the FIR rather than the country. The next update follows the 30 November resolution and whatever EASA does by 16 November; interim changes go on the running [Iran airspace status page](/blog/iran-airspace-status-open-or-closed).