FlightAware Sues Kalshi Over Risky Flight Cancellation Betting Markets

A significant legal battle is unfolding in the world of prediction markets, raising serious concerns about international aviation security. FlightAware, the world’s leading flight-tracking website, has initiated a lawsuit against the startup platform Kalshi. The allegations are grave: FlightAware claims Kalshi misused its proprietary data and trademarks to operate betting markets on flight cancellations. According to the filing, this practice not only violates intellectual property rights but also creates a hazardous environment by incentivizing bad actors to cause disruptions in air travel for financial gain. The case, filed in a New York district court, could set a major precedent for the regulation of future prediction markets.

The dispute began on July 14, 2026, when Kalshi expanded its market offerings to include commercial aviation. These markets allow users to wager on specific outcomes, such as whether at least 50% of scheduled flights at JFK Airport will be cancelled on October 21, 2026. FlightAware accuses Kalshi’s founders, Tarek Mansour and Luana Lopes Lara, of exploiting the FlightAware brand to gain consumer trust without permission. Even after receiving a formal cease-and-desist letter, the platform allegedly continued to market its services as being verified by FlightAware. This continued despite FlightAware updating its terms of service to explicitly ban the use of its data for prediction markets.

Numbers and facts

The lawsuit highlights specific instances where prediction markets led to troubling outcomes. One notable case involved an Army Special Forces soldier who reportedly won over $400,000 on the rival platform Polymarket by using classified information regarding a raid on Venezuelan President Nicolás Maduro. FlightAware fears that similar manipulations could occur within the aviation sector. If a large sum of money is at stake regarding cancellations on a specific date in 2026, individuals might be tempted to use drones or cyberattacks to trigger those cancellations manually.

"As a company whose business depends on the safety and integrity of aviation, FlightAware is facing imminent and irreparable harm by having its data and name associated with conduct that could compromise flight operations and passenger safety." - Excerpt from FlightAware's lawsuit

The company is not only seeking a temporary injunction but is also demanding that Kalshi account for and disgorge all profits linked to the unauthorized use of the FlightAware marks. Furthermore, FlightAware is requesting up to three times the value of actual damages suffered, along with the reimbursement of all legal fees. While Kalshi has recently removed the FlightAware name from its site and added a disclaimer, the plaintiff asserts that the platform continues to rely on FlightAware’s data streams in the background.

Background

Founded in 2018, Kalshi positions itself as a regulated prediction market platform in the United States. While sports betting is widely accepted across many states, markets centered on political events or critical infrastructure often operate in a legal gray area or face stiff opposition from regulatory bodies. FlightAware emphasizes that the unauthorized association has already caused reputational damage, with some users boycotting the tracking service under the false impression that it had partnered with the betting site. The integrity of global aviation is at risk when flight disruptions become objects of speculation.

Why it matters for German players

For German users, this case serves as a critical reminder of the risks associated with unlicensed betting platforms. Sites like Kalshi and Polymarket often operate without a license from the Gemeinsame Glücksspielbehörde der Länder (GGL). In Germany, the State Treaty on Gambling 2021 (GlüStV 2021) strictly defines which markets are permissible. Prediction markets focused on infrastructure failures or political outcomes are not authorized in Germany. Players are only protected when using operators listed on the official GGL whitelist, which ensures a 1,000 EUR monthly deposit limit, connection to the LUGAS supervision system, and a 1 EUR stake limit for virtual slots. Betting on unlicensed sites carries the risk of non-payment and potential legal issues.

What it means for GGL-licensed casinos

Reputable German online casinos and sportsbooks with GGL licenses distance themselves from such speculative markets that threaten public safety. In Germany, the regulatory focus remains on sports betting and virtual slots under rigorous player protection mandates. A market for flight cancellations would never be approved under German law due to the high risk of manipulation and harm to public interests. Licensed operators must ensure their data sources are legitimate and do not infringe on third-party rights. The FlightAware case underscores that the relationship between data providers and gambling operators must be governed by clear contracts to avoid legal liabilities and brand damage.