Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
41% | 59% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
41% | 59% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| August 31 | 41% |
| July 31 | 26% |
| July 15 | 17% |
| June 30 | 0% |
Market context
Iran’s airspace is currently empty of commercial flights amid the latest escalation with Israel, a stark real-world signal that the 26% crowd-implied probability on Polymarket for a full closure is not abstract speculation but a live market reaction to active conflict. On Polymarket, this contract trades at 26p in USDC on the Polygon network, where conditional tokens reflect the on-chain consensus that a general suspension of all Tehran FIR overflights is plausible but not yet certain before the August 2026 settlement deadline.
Historically, partial closures have framed how traders read this probability: in June 2026, Iran partially reopened the eastern Tehran FIR while the western sector remained closed, and earlier in February–June 2026, Israeli airspace shut and reopened multiple times during the same conflict [2][4]. The Iran-Israel war previously shut airspace across multiple Middle Eastern countries, with Iranian and Iraqi airspace staying closed even after President Trump announced a ceasefire, showing that de-escalation announcements do not immediately restore flight operations [1].
Traders should watch for new NOTAMs on Tehran FIR sectors, scheduled US–Israel–Iran diplomatic meetings, and any fresh strike announcements targeting Iranian bases, as these are the primary catalysts for a full closure. Recent flight tracking data confirms Iranian airspace is currently empty, and regional tensions continue to rise, making announcement schedules and dependency chains critical to monitor [3]. The Middle East airspace environment remains operational but highly constrained, with broad closures giving way to complex approval requirements and partial closures that could escalate to a general suspension [4].
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
Trade Iran full airspace closure by 2026? on PolyGram
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