Delta Air Lines and United Airlines have been sued by passengers who claim they were charged extra for a window seat but found themselves sitting next to a blank wall. The lawsuits, filed separately against the US carriers, seek millions of dollars in damages for more than a million customers of each airline.

Delta Air Lines and United Airlines each face a class-action lawsuit where passengers accuse them of charging more for window seats that didn't have any windows. Law firm Greenbaum Olbrantz filed both suits in federal courts in New York and California.

Part of a Boeing 737’s wing broke off while a Delta Air Lines flight was moving hundreds of miles an hour before landing in Texas on Tuesday. The horrifying mid-flight moment was reportedly captured on video by a passenger. There were 62 passengers and six crew members onboard Delta Flight 1893, CNN reports.