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→Wide-body airliners
=== Wide-body airliners ===
=== Wide-body airliners ===
The larger wide-body aircraft, or twin-aisle as they have two separate aisles in the cabin, are used for long-haul flights.
[[File:kr860.jpg|thumb|upright|The largest airliner in service, the [[wikipedia:Sukhoi_KR-860|(KR-860)]]]]
The larger wide-body aircraft, or twin-aisle as they have two separate aisles in the cabin, are used for high demand and long-haul flights. Wide-body airliners are often large enough to have extra amenities for passengers, such as a bar or lounge area. Aircraft used on long-haul flights usually have sleeping accommodations for a second crew. The first wide-body airliners had four engines, but advances in engine technology have made it possible for most modern wide-body airliners to fly with only two engines, improving fuel economy.
==== Ultra-wide-body airliners ====
==== Ultra-wide-body airliners ====
The largest wide-body aircraft, or trisle (tri-aisle) as they have three separate aisles on their main deck, are used for the highest density routes between major airports.
The largest wide-body aircraft, or or trisle (tri-aisle) as they have three separate aisles on their main deck, are used for high-density routes between major airports.
=== Regional aircraft ===
=== Regional aircraft ===
Regional airliners usually seat fewer than 100 passengers. These smaller aircraft are often used to feed traffic at large airline hubs to larger aircraft operated by the major mainline carriers, legacy carriers, or flag carriers. They are generally operated by partner airlines, often sharing the same livery as the main airline.
Regional airliners usually seat fewer than 100 passengers. These smaller aircraft are often used to feed traffic at large airline hubs to larger aircraft operated by the major mainline carriers, legacy carriers, or flag carriers. They are generally operated by partner airlines, often sharing the same livery as the main airline.