Boeing 777X-9

Boeing · United States · first flew 2020 · airliner

The 777X-9 is the largest variant of the 777X, Boeing's composite-wing next-generation 777, featuring folding wingtips that allow an unprecedented 71.8 m wingspan to fit within standard airport gates.

Recognition (WEFT)

W — Wings	Low-mounted, swept
E — Engines	2 × turbofan, wing-mounted
F — Fuselage	Longest 777 fuselage at 76.7 m; oval cabin windows larger than standard 777
T — Tail	Conventional

WEFT is AircraftIQ's four-point recognition method — how it works.

Spot it by:

Folding wingtip sections visible on the ground — tips fold up to keep overall span within airport limits
GE9X engines with new composite fan; wider and shorter nacelles than GE90 on earlier 777s
Longest 777 fuselage at 76.7 m; oval cabin windows larger than standard 777

The only commercial jet with folding wingtips — on the ground the tips hinge upward, making it instantly identifiable; GE9X engines are wider and quieter-looking than the GE90s on earlier 777 variants.

Specifications

The Boeing 777X-9 has a length of 76.7 m (252 ft).
It has a wingspan of 71.8 m (236 ft).
Its maximum speed is 950 km/h (590 mph).
Typical crew: 2 flight crew.

Figures are for the representative variant described above; marks differ. See how AircraftIQ sources figures.

History

First flown in January 2020, the 777X-9 was still undergoing FAA certification as of 2026 following extended testing. Emirates, Lufthansa, and Qatar Airways hold major launch orders. The folding wingtip mechanism is unprecedented on a commercial transport.

Variants

The 777X-8 is a shorter-range, shorter-fuselage sibling; both share the folding wingtip and GE9X engine.

Where you'll see it

Not in revenue service as of early 2026; certification expected in 2025–2026 with entry into service shortly after.

Related aircraft

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