Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
30% | 70% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
30% | 70% | 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 |
|---|---|
| December 31 | 30% |
| September 30 | 14% |
| August 31 | 7% |
| June 30 | 0% |
| July 15 | 0% |
| July 31 | 0% |
| July 21 | 0% |
| July 24 | 0% |
| August 15 | 0% |
| July 27 | 0% |
Market context
Iran has only briefly shut or narrowed its airspace several times during periods of acute military tension, which is the main reason the contract trades far above the crowd’s 0% YES despite no current full closure. In January 2026, Iran restricted most flights for roughly five hours and then reopened, with Reuters and other outlets reporting a limited NOTAM rather than a sustained blanket shutdown.[11][1] Earlier and later regional escalations also produced wider, but still often temporary or partial, airspace restrictions across the Middle East, which shows that a formal closure is usually a short-lived response to a specific security shock rather than a standing policy.[7][13][20]
The key catalyst is any sudden spike in Iran–US or Iran–Israel tensions that forces Tehran to issue a general NOTAM covering the Tehran FIR, rather than only western or central sectors. Safe Airspace said in June that Iran had partially reopened, but that very few international operators were using it and much Europe–Asia traffic still routed around the country.[5] Operators and traders should watch official Iranian civil aviation announcements, FAA/NOTAM updates, and airline schedule changes, because previous closures have been announced and lifted within hours, while partial measures have left some domestic traffic running and foreign carriers avoiding the FIR by choice.[3][4][14][20]
Cross-platform pricing appears to imply a near-zero tail risk in prediction markets, but that is mostly a reflection of the absence of a live closure rather than proof the event is impossible. By comparison, sportsbook-style aviation-risk pricing would typically react more to near-term geopolitical headlines than to the contract’s long-dated window, so any fresh escalation could reprice this market faster than consensus commentary would adjust.[5][20]
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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