Both the Boeing 777 and Airbus A350 are large wide-body aircraft, but their size comparison depends on the specific variants. Here's a breakdown:

Boeing 777:

• Length:

  • 777-200: 63.7 m (209 ft 1 in)

  • 777-300: 73.9 m (242 ft 4 in)

  • 777X (777-9): 76.7 m (251 ft 9 in)

• Wingspan:

  • 777-200/-300: 60.9 m (199 ft 11 in)

  • 777X: 71.8 m (235 ft 5 in) (foldable wingtips)

• Capacity: 314–426 passengers (depending on variant and configuration)

Airbus A350:

• Length:

  • A350-900: 66.8 m (219 ft 2 in)

  • A350-1000: 73.8 m (242 ft 1 in)

• Wingspan:

  • All variants: 64.8 m (212 ft 7 in)

• Capacity: 300–410 passengers (depending on variant and configuration)

Key Differences:

1. Length:

   • The 777-9 (longest 777 variant) is longer than the A350-1000.

2. Wingspan:

   • The A350's wingspan is larger than the classic 777 but smaller than the 777X.

3. Passenger Capacity:

   • The 777 generally has a higher maximum passenger capacity compared to the A350.

In summary, the Boeing 777-9 is the largest among these aircraft in terms of length and capacity. However, the A350 offers a slightly larger wingspan than earlier 777 models, but not the 777X.