Boeing’s new 777X offers significantly larger cabin windows than Airbus’s A350

The new Boeing 777X will include cabin window designs that are higher and larger than previous versions of the 777, although not as large as those on the 787 Dreamliner. Boeing states that the new windows will be approximately 162 square inches (1,045.2 square centimeters) in size—about a 29% increase over the A350’s window area.

Airbus generally installs smaller windows compared to Boeing across its fleet, including the A320 and A330 families when compared to their respective competitors from Boeing. This approach reflects Airbus’s focus on saving weight throughout its designs—a philosophy evident in decisions like window sizing.

"Designing and installing larger windows does almost nothing for an airline, at least on the surface," according to industry analysis provided in this report. "Most passengers don't notice subtle differences in size, and if anything, it's the placement of the windows that matters more to customers."

Larger cabin windows do not directly impact fuel efficiency or operational costs but can contribute positively to a passenger’s perception of modernity and comfort inside an aircraft cabin.

In summary, while both Airbus and Boeing continue to innovate with composite materials and advanced engineering solutions, their differing philosophies are reflected in details such as window size: Airbus prioritizes weight savings while Boeing emphasizes passenger experience through features like larger cabin windows.