5 aircraft and 9 cabin layouts, from the 72-600 to the 787-9. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 5 IndiGo aircraft here: the Airbus A320, the Airbus A320neo, the Airbus A321neo, the ATR 72-600 and the Boeing 787-9.
The Boeing 787-9, with 338 seats: 56 IndiGo Stretch and 282 Economy in its main layout.
The Boeing 787-9 has Premium Economy in at least one layout.
The Airbus A321neo, with 31" of seat pitch in Economy and seats 18" wide.
