Two suits filed this week accuse the airlines of unfairly charging passengers extra fees for window seats that the carriers knew were adjacent to aircraft walls.

United Airlines is facing a class action lawsuit for allegedly selling “windowless” window seats to passengers. The potential lawsuit, which is still recruiting members, claims that the airline “misled customers” by charging for aircraft window seats without windows.

One of the most disappointing seats on a Boeing 737 is central to a lawsuit filed in a federal court in San Francisco this week. A San Francisco man joined the class action suit against United Airlines Tuesday, alleging the airline charged him extra for a window seat that was actually next to a wall.