The era of large quadjets like the Airbus A380 and Boeing 747 is ending as production has ceased. Instead, future ultra-long-haul flights will rely on twinjets like the 777X and Airbus A350, which produce fewer emissions. Sustainable aviation fuel development is underway by both Airbus and Boeing.

The extended wingspan of the 777X improves aerodynamic efficiency and reduces fuel consumption due to a higher aspect ratio facilitated by folding wingtips. Scott Fancher from Boeing highlighted that the new aircraft builds on previous models' heritage while incorporating advanced technologies for better performance.

In comparison with other large aircraft such as the Antonov AN-225 'Mriya', destroyed in Ukraine, only the Airbus A380 and Stratolaunch Roc exceed it in size. However, these planes do not serve commercial passengers like the upcoming 777X.

Safety remains crucial with innovations like folding wingtips made by Liebherr Aerospace. These fold automatically during landing at speeds over 50 knots to facilitate ground operations smoothly across inspected airports worldwide.

Boeing plans for airlines operating this model to continue using existing airport infrastructure due to its compatibility with Category E airports—the most common type globally used by legacy carriers operating older models such as those within their own lineup (e.g., B747).