Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
23% | 77% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
23% | 77% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| August 31 | 23% |
| July 31 | 12% |
| July 15 | 8% |
| July 7 | 5% |
| June 30 | 1% |
| May 8 | 0% |
| May 31 | 0% |
| May 24 | 0% |
| June 15 | 0% |
| June 12 | 0% |
| June 14 | 0% |
| June 8 | 0% |
| June 9 | 0% |
| June 10 | 0% |
| June 13 | 0% |
| June 11 | 0% |
Market context
Israel has shut its civilian airspace to all entry and exit flights following a joint pre-emptive strike on Iranian nuclear and military sites, grounding every commercial flight at Ben Gurion Airport. This real-world action, which forced a broad suspension of aviation across the entirety of Israeli civilian airspace, directly mirrors the definition of a "major closure" in the current prediction market contract.
Historically, similar closures have occurred during the February–June 2026 Iran conflict, where Israeli airspace closed and reopened multiple times after US and Israeli strikes, with one instance lasting at least three days and requiring six hours of notice before reopening[1][4]. These precedents frame the current 0% crowd-implied probability as a reflection of the settlement window ending in May 2026, a date that has already passed relative to the June 2026 closure events, suggesting the market may be misaligned with the temporal reality of past incidents[2][6].
Traders should monitor official announcements from the Israeli Ministry of Transportation regarding airspace status, as well as scheduled military operations or retaliatory strikes from Iran that could trigger renewed closures[1]. Recent reporting confirms that the airspace remains closed "until further notice" following the latest strike, with land crossings to Sinai and Jordan remaining operational while all commercial aviation is suspended[1][3]. Any escalation in the US–Israel–Iran conflict chain, particularly new attacks on Iranian facilities, would serve as the primary catalyst for a repeat of this major airspace suspension.
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
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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 reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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