Using a modular system and an adaptable floor plan, the Airbus A320 typically has 150 seats split between two classes or 180 seats arrayed in a high-efficiency cabin format. Some carriers include a specialized first class section with larger seats and more leg room, reducing the total number of seats.
The Airbus A320 is considered a narrow-body aircraft with only a single aisle running between rows of seats against the fuselage wall. The number of seats is largely dependent on the desires of the carrier. JetBlue uses three seats per row on each side of the aisle, but the A320 can be outfitted to use other configurations.