Have you ever paid for a window seat on an airplane that didn’t actually have a window? You could be part of a class action lawsuit in the near future.

Delta and United Airlines have been sued this week in federal court for misrepresenting their seat offerings online. The plaintiffs note that when people buy tickets through competitors like Alaska Airlines and American Airlines, the website will flag when a window seat doesn’t actually have a window. Delta and United don’t tell consumers when that’s the case, according to the new lawsuits.

The filing against Delta, which is available online from Courthouse News , claims that the number of people affected could be over a million:

For many years, Delta has knowingly and routinely sold windowless “window” seats to travelers. For instance

See Full Page