PolymarketGeopoliticsDevelopingUpdated 5m ago

Iran full airspace closure by December 31?

As of Oct 11, 2026, 5:24 PM ET, Polymarket priced this market at 29.0% (little changed over 24 hours). It had $18K traded in the past 24 hours, $29.3K of order-book liquidity and a bid-ask spread of 2.0 pts. probcast.co rates the support behind this price as moderate.

Market probability
29.0%
Little changed over 24 hours

Thin market where small orders can move the price, with broad trading across many accounts.

Price historyPolymarket

Source: Polymarket price history

How credible was the move?

Methodology →

Move validity

Moderate

Consensus stability

Stable

Contract clarity

High

Can you trust this price?

Two different questions: how hard the price is to move, and whose trading set it.

Market capacity

How hard is it to move this price?

ThinTight spread

Order-book liquidity

$29.3K

Bid-ask spread

2.0 pts

24h volume

$18K

Total volume

$432.4K

It would take roughly $127 of buying to move the price up by ~5 pts.

Little money on the book — a modest order can move this price, so treat swings with care.

Who's trading

Whose opinion is this price?

Broad participation
19%of the traded money came from the single largest account

Accounts

92

Trades

200

over 10 days

Largest order

$2.6K

$15.5K traded across these 200 trades (last 10 days).

Many independent accounts traded — the price reflects a crowd, not one bettor.

Recent trade activity$15.5K traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

This market will resolve to “Yes” if Iran initiates a general closure of its airspace, that is not solely due to weather conditions, between market creation and the specified date, 11:59 PM ET. Otherwise, this market will resolve to “No”.

This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.

View full official resolution rules

This market will resolve to “Yes” if Iran initiates a general closure of its airspace, that is not solely due to weather conditions, between market creation and the specified date, 11:59 PM ET. Otherwise, this market will resolve to “No”. A “general closure” refers to a cancellation or suspension of aviation which is generally applicable to all commercial flights transiting Iranian airspace (“Tehran FIR”). A qualifying closure must apply generally to all of Iran or the Tehran FIR; limited cancellations, delays, or partial closures will not qualify. A closure which applies generally to commercial aviation across Iranian airspace, with limited exceptions for certain categories of flights, however, will qualify (e.g. exceptions for certain flights pre-approved by the Iranian Civil Aviation Authority may be permitted). Qualifying previous examples include the February 28, 2026 total closure of Iranian airspace (https://www.iranintl.com/en/202602289115) and the January 2026 total closure of Iranian airspace except to international flights with express governmental permission (https://www.reuters.com/world/middle-east/iran-shuts-airspace-most-flights-flightradar24-says-2026-01-14/). Non-qualifying examples include the January 27, 2026 partial closure of Iranian airspace around the Strait of Hormuz (https://www.aa.com.tr/en/middle-east/iran-issues-airspace-notice-for-military-drills-near-strait-of-hormuz/3812508), the April 2024 closure of Iran’s western airspace (https://www.reuters.com/world/middle-east/iranian-airports-cancel-flights-until-monday-morning-2024-04-14/), and the January 25 - April 25, 2026 VFR (Visual Flight Rules) flights suspension which did not broadly close commercial aviation in Iran (https://www.intellinews.com/iran-suspends-general-aviation-and-vfr-flights-in-new-airspace-directive-421997/). Warnings, No-Fly-Zones, or other flight restrictions imposed by airlines or countries other than Iran will not be sufficient for a “Yes” resolution. Airspace closures which occur solely due to weather conditions, earthquakes, or volcanic eruptions, will not qualify. The primary resolution sources for this market will be official information from Iranian aviation authorities and a consensus of credible reporting.

Resolution source: iranintl.com

What could move this market next?

  • The market's deadline arrivesDecember 31, 2026 at 11:59 PM ET

    The contract must resolve based on what has happened by this date.

  • Confirmation at the resolution source (iranintl.com)

    The rules name this source as the basis for settlement.

Derived from the contract's own mechanics as of Oct 11, 5:29 PM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: low · expected error ±14 pts.

Quote-drivenLegacy movement classifier: watch

What's happening

medium classifier confidence
Quote-driven

A tight, deep, quote-driven book with little executed flow. The price is stable but reflects resting quotes more than active trading.

  • Tight spread on a liquid, calm market

The latest price is a usable but caveated read — weigh it with the market state.

More details — reliability score, dynamics, durability
Reliability score
44Medium
Where the price path tends to go next488 observed
  • Choppy / mean-reverting91%
  • Stable consensus5%
  • Thin-liquidity spike2%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityHigh· half-life —
PredictabilityStable

Secondary read: leaning toward Thin market.

A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.

Market data

24h volume

$18K

Liquidity

$29.3K

Total volume

$432.4K

Category
Geopolitics
Venue
Polymarket
Open interest
—
Spread
2.0 pts
Best bid
28.0%
Best ask
30.0%
Resolves
Dec 31, 2026
Resolution
iranintl.com
Change (pts)1H0.06H0.024H0.07D0.0

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