The Saab 340
Pilots say that this plane is one of the most uncomfortable planes in history. According to “BuckeyeFanFlyer” on Flyer Talk, the loud noise of the engine was bearable since you’d be sitting right next to it. This Swedish-built plane is still used today. One pilot even said that the next time he fled the aircraft, he would carry and wear the earplugs because of the noise from the engine next to the seat of the pilot.

The Saab 340