Flight-tracking service FlightAware is suing prediction markets giant Kalshi accusing the company of using its data and name to run “gambling markets on flight cancellations” without permission.
In July, Kalshi announced markets allowing customers to bet on flight-cancellation risk. The plans drew criticism over concerns that the markets could create financial incentives for people to disrupt air travel or cause airport closures.
FlightAware said Kalshi had named it as the primary source agency for the markets’ settlement, but that it had not authorized Kalshi to use its name, data or trademarks for that purpose.

