Passengers sued Delta Air Lines and United Airlines, accusing them of charging extra for “window” seats that had no windows.
The lawsuits, filed in New York and San Francisco federal courts, seek millions in damages for more than one million passengers at each airline.
The complaints say several Boeing 737s, Boeing 757s, and Airbus A321s have seats beside blank walls due to ducts or electrical components.
Unlike Alaska and American Airlines, Delta and United allegedly fail to flag these seats during booking, even while charging passengers tens or hundreds of dollars.
Plaintiffs argue that travelers pay for window seats for comfort, views, or to ease flying fears, and would not have spent extra had they known.
Neither airline has responded yet.