The 777 is the larger platform
Its wider and generally higher-capacity cabin suits dense intercontinental markets. Airlines can carry more passengers and belly cargo, but they also need stronger demand to use that capacity profitably.
The 787 is optimized around lighter structures and efficiency
Extensive composite construction and newer systems help reduce weight and fuel burn. The family was designed in part to make long nonstop routes viable with fewer seats.
Passenger experience differs by cabin design
The 787 is known for features such as larger electronically dimmable windows and a lower perceived cabin altitude. The 777 offers a wider fuselage and can support very large premium and economy layouts.
Cargo needs can favor the larger aircraft
Dense long-haul routes often generate substantial freight revenue. The 777's size can be an advantage where cargo demand is strong, while a 787 may fit passenger demand more precisely elsewhere.
Fleet commonality is limited despite the shared manufacturer
Pilots and maintenance teams require type-specific qualifications and procedures. Airlines therefore evaluate the cost of introducing another fleet type alongside route economics.
The better aircraft is route-dependent
A 787 can outperform a 777 economically on a thinner long route, while a full 777 can produce lower unit costs on a dense market. Capacity discipline is the key comparison.
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