Flight-tracking company FlightAware filed suit against Kalshi in New York federal court, accusing the prediction-market operator of using its data and brand without authorization to support markets on flight cancellations. Reuters places the complaint in the Southern District of New York and describes claims around contract and trademark-style harms, with a push for injunctive relief.

Prediction markets sell clarity. Their weak point is often the oracle layer: who owns the reference data, who may commercialize it, and what happens when a consumer brand becomes the settlement cue for betting flow. If FlightAware’s theory holds, the fight is less about whether event contracts are fashionable and more about whether platforms can free-ride on operational datasets built for aviation customers.

Kalshi has spent the past year expanding distribution while defending the legal status of event trading. A data-rights case is a different battlefield from pure derivatives jurisdiction fights. Even a narrow injunction on flight products would force other venues to audit every sports, weather, and logistics feed they treat as public.

Watch the docket for temporary restraining requests, any quick settlement, and whether rival prediction venues quietly drop or re-license similar flight contracts.