A senior House Democrat has asked eight major U.S. airlines to explain whether they use artificial intelligence to set ticket prices based on travelers’ personal information, widening scrutiny of so-called surveillance pricing. Rep. Frank Pallone Jr. (D-N.J.), the ranking member of the House Energy and Commerce Committee, sent letters Tuesday to American Airlines, Delta Air Lines, United Airlines, Alaska Airlines, JetBlue Airways, Southwest Airlines, Frontier Airlines and Hawaiian Airlines seeking details on how they collect and use customer data. Pallone said he is concerned that companies could be using personal data to determine the prices consumers see and pay. His questions cover whether airlines factor in information such as income, spending history, location and browsing data when setting fares, and how AI systems are used in that process. He also asked how often AI changes prices, which consumer data points carry the most weight, and whether fares are reviewed by humans before they take effect. The inquiry comes amid broader debate over dynamic pricing (real-time price adjustment) and whether personalized pricing tools cross into unfair discrimination. Pallone cited a study that found one airline increased revenue by as much as 6 percent through AI-based pricing informed by consumer data. He also pointed to lawsuits accusing airlines of using customer information to set prices, including a proposed class action filed against JetBlue in May over alleged "dynamic surveillance pricing." The letters build on an inquiry Pallone launched in May into 25 companies over whether they use consumers’ personal data to charge different prices for the same products or services. He said consumers deserve to know whether businesses are using personal information to manipulate prices or test algorithms that shape what people are charged.