Over 400 US flights cancelled on April 5?

This market will resolve to "Yes" if the "Total cancellations yesterday" figure on FlightAware is greater than 400 when it is checked at 12:00 PM ET on the day after April 5, 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 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".

Source: official resolution criteria from Polymarket. Always verify on the source page before trading.