Over 400 US flights cancelled on April 4?

Name: Over 400 US flights cancelled on April 4?
Start: 2026-04-03T23:30:18.609Z
End: 2026-04-04T00:00:00.000Z

Politics·Airport

Over 400 US flights cancelled on April 4?

Apr 4

Apr 5

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Apr 7

Apr 4

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Apr 7

99% chance

$55 Vol.

Apr 4, 2026

99% chance

$55 Vol.

Apr 4, 2026

This market will resolve to "Yes" if the "Total cancellations within, into, or out of the United States yesterday" figure on FlightAware is greater than 400 when it is checked at 12:00 PM ET on the day after April 4, 2026. Otherwise, this market will resolve to "No". The resolution source for this market is https://www.flightaware.com/live/cancelled/yesterday, specifically the "Total cancellations within, into, or out of the United States yesterday" figure on the "FlightAware.com live flight delay and cancellation statistics for yesterday" table when checked at the specified time. If the resolution source becomes permanently unavailable, or is otherwise unavailable at the resolution time up until 6 PM ET on that date, market will resolve to "No".

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38%

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Frequently Asked Questions

"Over 400 US flights cancelled on April 4?" is a prediction market on Polymarket where traders buy and sell "Yes" or "No" shares based on whether they believe this event will happen. The current crowd-sourced probability is 75% for "Yes." For example, if "Yes" is priced at 75¢, the market collectively assigns a 75% chance that this event will occur. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"Over 400 US flights cancelled on April 4?" is a newly created market on Polymarket, launched on Apr 3, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "Over 400 US flights cancelled on April 4?," simply choose whether you believe the answer is "Yes" or "No." Each side has a current price that reflects the market's implied probability. Enter your amount and click "Trade." If you buy "Yes" shares and the outcome resolves as "Yes," each share pays out $1. If it resolves as "No," your "Yes" shares pay $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current probability for "Over 400 US flights cancelled on April 4?" is 75% for "Yes." This means the Polymarket crowd currently believes there is a 75% chance that this event will occur. These odds update in real-time based on actual trades, providing a continuously updated signal of what the market expects to happen.

The resolution rules for "Over 400 US flights cancelled on April 4?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.

Yes. You don't need to trade to stay informed. This page serves as a live tracker for "Over 400 US flights cancelled on April 4?." The outcome probabilities update in real-time as new trades come in. You can bookmark this page and check the comments section to see what other traders are saying. You can also use the time-range filters on the chart to see how the odds have shifted over time. It's a free, real-time window into what the market expects to happen.

Polymarket odds are set by real traders putting real money behind their beliefs, which tends to surface accurate predictions. “Over 400 US flights cancelled on April 4?” is still building its trading base, so the odds will become increasingly reliable as more participants enter the market. Prediction markets like Polymarket have a strong track record of accuracy, especially as events approach their resolution date. For example, Polymarket has a one month accuracy score of 94%. For the latest stats on Polymarket’s prediction accuracy, visit the accuracy page on Polymarket.

To place your first trade on "Over 400 US flights cancelled on April 4?," sign up for a free Polymarket account and fund it using crypto, a credit or debit card, or a bank transfer. Once your account is funded, return to this page, select the outcome you want to trade, enter your amount, and click "Trade." If you're new to prediction markets, click the "How it works" link at the top of any Polymarket page for a quick step-by-step walkthrough of how trading works.

On Polymarket, the price of "Yes" or "No" represents the market's implied probability. A "Yes" price of 75¢ for "Over 400 US flights cancelled on April 4?" means traders collectively believe there is a 75% chance this event will happen. If you buy "Yes" at 75¢ and the event does happen, you receive $1.00 per share — a profit of 25¢ per share. If the event doesn't happen, those shares are worth $0.

The "Over 400 US flights cancelled on April 4?" market's scheduled end date has passed, but the market has not yet been officially resolved. The end date indicates when the underlying event is expected to occur or become knowable. It is not the moment trading stops. The market remains open for trading until the outcome is formally resolved through the resolution process. You can still buy, sell, or close your position while the market is pending resolution. Check the resolution status tracker and "Rules" section on this page for updates on the resolution timeline.

The "Over 400 US flights cancelled on April 4?" market has an active community of 12 comments where traders share their analysis, debate outcomes, and discuss breaking developments. Scroll down to the comments section below to read what other participants think. You can also filter by "Top Holders" to see what the market's biggest traders are positioned on, or check the "Activity" tab for a real-time feed of trades.

Polymarket is the world's largest prediction market, where you can stay informed and profit from your knowledge of real-world events. Traders buy and sell shares on outcomes for topics ranging from politics and elections to crypto, finance, sports, tech, and culture, including markets like "Over 400 US flights cancelled on April 4?." Prices reflect real-time, crowd-sourced probabilities backed by financial conviction, often providing faster and more accurate signals than polls, pundits, or traditional surveys.

Over 400 US flights cancelled on April 4?

Over 400 US flights cancelled on April 4?

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Over 400 US flights cancelled on April 4?

Over 400 US flights cancelled on April 4?

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Rules

Market Context

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Comments (12)

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Activity

Frequently Asked Questions

What is the "Over 400 US flights cancelled on April 4?" prediction market?

How much trading activity has "Over 400 US flights cancelled on April 4?" generated on Polymarket?

How do I trade on "Over 400 US flights cancelled on April 4?"?

What are the current odds for "Over 400 US flights cancelled on April 4?"?

How will "Over 400 US flights cancelled on April 4?" be resolved?

Can I follow "Over 400 US flights cancelled on April 4?" without placing a trade?

Why are Polymarket's odds for "Over 400 US flights cancelled on April 4?" considered reliable?

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What does a price of 75¢ for "Yes" mean?

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