A "narrow-body" aircraft is a type of airplane characterized by a single aisle and a smaller fuselage compared to wide-body aircraft. These planes typically seat between 100 to 240 passengers and are commonly used for short to medium-haul flights. Examples of narrow-body aircraft include the Boeing 737 and Airbus A320. Narrow-body planes are designed for efficiency and cost-effectiveness, making them popular among airlines for domestic routes. Their smaller size allows for easier maneuverability at airports and can lead to quicker boarding and deplaning processes. This makes them ideal for routes with high passenger turnover.