Long-haul flights have traditionally been operated by widebody aircraft. However, advances in technology have changed that perception. Over the past few decades, aircraft manufacturers have developed new-generation narrowbodies with extended range and efficiency, which gives airlines more flexibility to serve long, thin routes that do not require the capacity of larger jets. The Airbus A321XLR , which has a published range of 4,700 nautical miles (8,700 kilometers), is a good example.

Indeed, airlines expect slightly lower real-world capability, but even so, it extends the reach of the A321neo family well into long-haul territory. That said, other narrowbody aircraft such as the A321neo, A320neo, Boeing 737 MAX 8 and MAX 9, and the Boeing 757-200, are also used on several routes,

See Full Page