The misaligned windows on JetBlue's A321LR. Thomas Pallini/Business Insider Two US airlines are facing lawsuits over the definition and disclosure of a window seat. Windowless seats are largely a result of aircraft design and seat layout. Windowless seats in a carrier's premium section usually cost extra, view or not. A pair of lawsuits against two US airlines over what counts as a "window seat" has drawn attention to a quirk of aircraft cabins: not every window seat actually has a window. Sev