A "Narrow-Body" aircraft is a type of commercial airplane designed for short to medium-haul flights. These planes typically have a single aisle and can accommodate fewer passengers compared to larger aircraft. Common examples of narrow-body planes include the Boeing 737 and the Airbus A320. Narrow-body aircraft are often used for domestic routes and regional travel, making them popular among airlines for their efficiency and cost-effectiveness. They usually have a seating capacity ranging from about 100 to 240 passengers, depending on the specific model and configuration.