When real-time flight tracker FlightAware discovered that Kalshi had launched betting markets on flight cancellations using its data and branding, the company didn't just ask for a stop—it filed a lawsuit. The case, filed in an unnamed court, alleges unauthorized use of FlightAware's proprietary information and name, and it raises pointed questions about the safety and integrity of prediction markets that touch critical infrastructure. Main Developments Kalshi, a platform that lets users bet on future events, began offering markets on the number of flights canceled in the U.S. or at specific airports roughly a month ago. FlightAware claims Kalshi used its data to settle these bets without permission and continued to display FlightAware's branding even after being told to stop. According to the lawsuit, Kalshi never informed FlightAware about its plan to rely on the tracker's data. FlightAware says it only learned of the bets through media coverage, not from Kalshi directly. The company is now seeking a jury trial, though it has not specified the amount of damages it wants. Read also: 3 Key Facts About Kyoto Fusioneering's New Fusion Fuel Device Background Kalshi operates in a growing field of prediction markets, alongside platforms like Polymarket, where users wager on everything from election results to album sales. These markets have already demonstrated a vulnerability to manipulation, despite rules that ban insider trading. One notable example: a Polymarket user bet $32,000 that Venezuelan President Nicolás Maduro would be ousted by the end of January—hours later, U.S. forces captured him, and the user collected $400,000. In another case, a White House teleprompter operator allegedly earned over $100,000 on Kalshi by using advance knowledge of presidential speeches to place bets. Why It Matters FlightAware argues that betting on flight cancellations could be abused to interfere with airline operations, creating safety risks for travelers and airport employees. If someone with inside knowledge or malicious intent can profit from disruptions, the incentive to cause them grows. This case also highlights a broader concern: prediction markets can rely on third-party data without the data provider's consent, raising legal and ethical questions about data ownership and the potential for market manipulation. The outcome could set a precedent for how such platforms source and use information. What's Next The lawsuit is in its early stages, and no court date has been set. FlightAware has demanded a jury trial, but Kalshi has not yet filed a response. The case will likely hinge on whether Kalshi's use of FlightAware's data constitutes fair use or an infringement of proprietary rights. Observers will watch closely to see if other data providers follow FlightAware's lead, and whether regulators step in to address the unchecked growth of prediction markets. For now, the battle between a flight tracker and a betting platform could reshape the rules for an entire industry.