What is the name of Boeing's wide-body aircraft that has the highest passenger capacity?

The Boeing 777 is indeed the wide-body aircraft with the highest passenger capacity in Boeing's commercial lineup. It is designed to carry a significant number of passengers over long distances and is known for its spacious and comfortable cabin configurations.

The Boeing 777 typically features multiple seating arrangements, with some variants accommodating over 400 passengers in a two-class configuration, and even more in a single-class layout. The aircraft can be configured to include various amenities such as larger overhead bins and wider aisles, enhancing the passenger experience.

In contrast, the Boeing 737 and 757 are narrower-body aircraft, primarily used for short to medium-haul routes and do not match the passenger capacity of the 777. The Boeing 787 Dreamliner, while innovative and designed for long-haul travel with an emphasis on efficiency and passenger comfort, generally accommodates fewer passengers than the Boeing 777 when comparing typical configurations. This makes the Boeing 777 the correct answer in terms of maximum capacity for wide-body aircraft in the Boeing fleet.