How Many Miles Per Gallon Does A Boeing 787 Get Per Passenger Compared To An Airbus A330-900neo?

The Boeing 787 and Airbus A330-900neo compete on long-haul routes, and the article argues that while the 787 is lower in total fuel burn, per-passenger efficiency depends on airline configuration. It says the 787-9 burns about 1,400–1,500 gallons (5,300–5,700 liters) of fuel per hour in cruise using GE GEnx-1B or Rolls-Royce Trent 1000 engines. The A330-900neo burns about 1,450–1,530 gallons (5,500–5,800 liters) per hour, powered by two Rolls-Royce Trent 7000 engines. The gap is described as modest—roughly 50–80 gallons per hour (about 3–5%) in the 787’s favor—yet passenger metrics can flip based on cabin seat count, layout, and route length. The 787’s advantage is attributed to composite structure, no-bleed electrics, and a higher-aspect-ratio wing, while the A330neo counters with lower acquisition cost and newer Trent 7000 engines.