4 aircraft and 5 cabin layouts, from the A320 to the A321neo. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 4 Pegasus Airlines aircraft here: the Airbus A320, the Airbus A320neo, the Airbus A321neo and the Boeing 737-800.
The Airbus A321neo, with 239 seats: 239 Economy in its main layout.
The Boeing 737-800, with 29" to 30" of seat pitch in Economy and seats 17" wide.
