Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
42% | 58% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
42% | 58% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| August 31 | 42% |
| July 31 | 26% |
| July 15 | 16% |
| June 30 | 0% |
Market context
Iran’s airspace has been fully closed amid escalating hostilities with Israel, following US and Israeli strikes on Iranian military targets and Tehran’s retaliatory missile and drone attacks. This closure, which began in March 2026, forced a significant shutdown across the Middle East, with at least eight nations including Iran, Israel, Jordan, and Qatar declaring their airspace closed. Around 24% of flights to the region were cancelled on the day hostilities erupted, and aviation security experts warned that airspace restrictions would persist for an extended period[1][2].
Historically, comparable cases show that partial reopenings often occur without restoring full commercial viability. By June 2026, Iran partially reopened the eastern part of the Tehran FIR, yet most international operators still avoided the route, continuing to route traffic via Egypt or the Caucasus[3]. This pattern suggests that a 26% implied probability for a general closure by August 2026 may understate the likelihood, given that even limited reopenings have not attracted significant traffic and US operators remain prohibited from overflying the region due to misidentification risks[3].
Traders should monitor official announcements from the Iranian Civil Aviation Organization, US State Department advisories, and scheduled military exercises in the region. Recent flight tracking data confirms Iranian airspace remains empty as tensions rise, with Malaysia Airlines flights diverted due to heightened risk warnings[4][7]. Any escalation in US-Israeli military activity or Iranian retaliation could trigger a renewed general closure, making these dependencies critical for assessing the contract’s settlement[1]. Analyst consensus diverges from prediction-market odds, with sportsbook lines implying higher risk than the current 26% YES probability reflects.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
FAQ
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
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