FlightAware Sues Kalshi Over Flight Cancellation Prediction Markets Using Its Data Without Permission

TL;DR

• FlightAware has filed a lawsuit against regulated prediction market platform Kalshi, alleging it used FlightAware's brand name and proprietary flight tracking data to create and market flight cancellation event contracts without a license or permission.
• The core of the dispute centers on trademark infringement, unauthorized data scraping/misappropriation, and false endorsement claims, while Kalshi maintains its markets operate as CFTC-regulated event contracts using public information.
• The case could set a major precedent for how data licensing works in the booming prediction market industry, as platforms like Kalshi, Polymarket, and others increasingly turn real-world data into tradable financial products.

The Data Behind The Bet

At the heart of the lawsuit is how Kalshi's flight-related markets actually work. Kalshi is a federally regulated exchange overseen by the Commodity Futures Trading Commission (CFTC), where users don't bet against the house but trade event contracts - essentially yes-or-no questions about future outcomes.

In recent months, Kalshi listed contracts allowing users to trade on whether specific flights, routes, or airlines would experience cancellations or major delays within a given timeframe. For example, a contract might ask: "Will more than 10% of flights from LAX be cancelled tomorrow?" Traders buy "Yes" or "No" shares, with prices fluctuating between $0.01 and $1.00 based on perceived probability. If the event happens, "Yes" shares pay out $1.

To settle these markets, Kalshi needs a definitive, trusted source of truth. According to FlightAware's complaint, Kalshi explicitly referenced FlightAware as its source for determining flight status and cancellation outcomes in its market rules and promotional materials, telling users its data would be used to resolve contracts. FlightAware alleges this was done without any commercial agreement, API license, or permission to use its brand.

Why FlightAware Is Suing

FlightAware, which operates one of the world's largest flight tracking data platforms aggregating FAA, airline, and ADS-B data, argues Kalshi's actions cross several legal lines.

First is trademark infringement and false association. FlightAware claims Kalshi's use of its name and logo in market descriptions and help documentation falsely suggests a partnership, sponsorship, or endorsement that does not exist, potentially damaging FlightAware's reputation if traders dispute market outcomes.

Second is misappropriation and unauthorized use of proprietary data. While basic flight schedules and FAA cancellation data are public, FlightAware argues its aggregated, cleaned, and real-time tracking feeds, historical analytics, and proprietary flight status determinations are a commercial product offered through paid API and enterprise licenses. The lawsuit alleges Kalshi either scraped this data or repurposed it via unauthorized channels to power its settlement mechanism without paying for a data license.

Third is unjust enrichment. FlightAware contends Kalshi is profiting directly from the credibility and accuracy FlightAware has built over nearly two decades, using its trusted brand to make its financial products seem more legitimate to traders while avoiding licensing fees that other commercial users pay.

Kalshi has not yet filed a detailed public response to the lawsuit, but the company has previously defended its model by noting it operates as a Designated Contract Market regulated by the CFTC and that its event contracts rely on publicly verifiable outcomes. In past disputes over similar data issues, prediction market operators have argued that factual information about real-world events - like whether a flight was cancelled - cannot be owned and that referencing a data source for transparency is fair use, not trademark infringement.

A Bigger Fight Over Who Owns Reality

While this case is specifically about flights, its implications stretch far beyond the aviation industry.

Prediction markets are having a breakout moment. After years of regulatory uncertainty, CFTC-regulated platforms like Kalshi have expanded aggressively, offering contracts on everything from elections and economic reports to weather, awards shows, and sports. Each new market requires a reliable data oracle to decide who wins and who loses.

That has created a massive, largely unsettled market for data licensing. Companies like FlightAware, sports data providers like Sportradar and Genius Sports, weather data firms, and financial data aggregators are all watching closely. If Kalshi can freely cite and leverage their data and brand to settle trades worth millions of dollars, it could undermine the entire paid data-licensing model.

Conversely, if FlightAware prevails, prediction market platforms may be forced to negotiate expensive, exclusive data deals for every type of event contract they list - similar to how sportsbooks must pay leagues for official data. That could dramatically raise the cost of operating prediction markets and slow their expansion.

The lawsuit also raises a novel question for regulators. The CFTC regulates *how* Kalshi's contracts are traded, but not necessarily *where* Kalshi gets the data to settle them. This case will test whether intellectual property and trademark law can be used to control how real-world facts are turned into Wall Street-style products.

What Happens Next

The case is expected to move toward early motions to dismiss in the coming months, where a judge will have to decide whether referencing a brand as a settlement source constitutes trademark infringement and whether flight status data, even when aggregated, is protectable.

Industry insiders expect a settlement is possible, as Kalshi could opt to simply license FlightAware's Firehose API and secure official branding rights rather than fight a protracted legal battle that could threaten its other data-dependent markets.

Either way, the outcome will be closely watched by every company whose data is being turned into a tradable event. In an economy where reality itself is becoming a financial asset, who gets to sell the truth is now a billion-dollar legal question.

AndroGuider Team

Articles written by the AndroGuider team. We try to make them thorough and informational while being easy to read.