Wide-body aircraft are typically used for long-haul flights, as they have a greater range and can carry more passengers and cargo than narrow-body aircraft. They are also well-suited for serving high-traffic routes, as they can accommodate larger numbers of passengers and offer more amenities and features to enhance the travel experience.

Wide-body aircraft have two aisles, which allows for faster boarding and disembarking of passengers, as well as more space for passengers to move around and access overhead storage bins. They also have a higher seating capacity than narrow-body aircraft, with most wide-body aircraft able to accommodate between 250 and 600 passengers.

By comparison, a typical narrow-body airliner has a diameter of 3 to 4 m (10 to 13 ft), with a single aisle, and seats between two and six people abreast.

The most common type of wide-body aircraft are the Boeing 747 and the Airbus A380, which are the largest passenger aircraft in the world. Other popular wide-body aircraft include the Boeing 777, the Airbus A350, and the McDonnell Douglas DC-10.

Overall, wide-body aircraft play a crucial role in the global transportation industry, providing long-haul air travel for millions of passengers every year.