On these types of aircraft (as well as several others), the cabin window lines are interrupted by the existence of air conditioning riser ducts, window conduits, or electrical wiring embedded in the cabin wall, which makes placing a window there impossible for the manufacturers.

Some passengers feel more comfortable flying with a window seat, and, as every traveler knows, you can sometimes pay more to ensure you get one. However, a law firm is alleging that some airlines, such as Delta and United,