3 aircraft and 3 cabin layouts, from the A320 to the A321LR. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 3 Peach aircraft here: the Airbus A320, the Airbus A320neo and the Airbus A321LR.
The Airbus A321LR, with 218 seats: 218 Economy in its main layout.
The Airbus A320neo, with 28" to 35" of seat pitch in Economy and seats 18" wide.
