JetBlue Airways has been sued in a proposed class action lawsuit alleging the airline uses customers' personal data to set ticket prices through what critics call "surveillance pricing."

The complaint was filed Wednesday in Brooklyn federal court, accusing JetBlue of concealing its use of tracking technology to dynamically adjust fares based on customer browsing behavior and other personal information.

According to the lawsuit, the airline shares customer data with third-party companies whose programs help determine when to raise ticket prices. The legal action follows a social media exchange on X where JetBlue suggested a customer clear their browser cache or use an incognito window when booking flights.

The airline's response to the social media post raised concerns among consumers that JetBlue employs tracking methods to monitor customer behavior and potentially charge higher prices based on that data. The lawsuit claims this practice allows the airline to extract maximum revenue from individual customers.

Dynamic pricing, where companies adjust prices in real-time based on various factors including customer data, has become increasingly common across industries. However, the practice has drawn scrutiny from consumer advocates who argue it can lead to unfair pricing discrimination.

JetBlue has not yet publicly responded to the specific allegations in the lawsuit. The case seeks class action status, which would allow it to represent other customers who may have been affected by similar pricing practices.