An airliner is a type of aircraft for transporting passengers and air cargo . Such aircraft are most often operated by airlines. Although the definition of an airliner can vary from country to country , an airliner is typically defined as an aircraft intended for carrying multiple passengers or cargo in commercial service.
The largest airliners are wide-body jets. These aircraft are frequently called twin - aisleaircraftbecause they generally have two separate aisles running from the front to the back of the passenger cabin. These aircraft are usually used for long-haul flights betweenairline hubs and major citieswith many passengers.
A smaller, more commonclass of airliners is the narrow-body or single aisleaircraft . These smaller airliners are generally used for short to medium-distance flights with fewer passengers than their wide-body counterparts.
Regional airliners typically seat fewer than 100 passengers and may be powered by turbofans or turboprops. These airliners are the non-mainline counterparts to the larger aircraft operated by the major carriers, legacy carriers, and flag carriers and are used to feed traffic into the large airline hubs.