Newest Commercial Aircraft in Service

Why Is the 777-9 So Delayed?

Boeing first flew the 777-9 in January 2020 and originally targeted EIS in late 2020. Six years later it still has not carried a paying passenger. Three things drove the slip: post-737 MAX FAA scrutiny that reset the certification baseline for every Boeing program; a pause to re-engineer the folding wingtip locking mechanism; and durability problems with the General Electric GE9X engine, the largest commercial turbofan ever built, including issues with the high-pressure compressor stator and combustor.

Lufthansa is now the launch operator, with first commercial service expected in 2026. Emirates, Qatar, ANA, and Cathay Pacific are also major customers awaiting deliveries.

What About Supersonic and Electric?

Three projects get the most attention. Boom Overture targets Mach 1.7 with a 64-80 seat cabin and 4,250 nm range; United and American Airlines have placed orders. The XB-1 subscale demonstrator broke the sound barrier in 2025, but Boom is now designing its own Symphony engine after Rolls-Royce withdrew, which makes the 2029 EIS target ambitious.

Heart Aerospace ES-30 is a 30-seat hybrid-electric regional aircraft with about 200 km of pure-battery range and longer reach on its reserve generators. United and Air Canada are launch customers targeting 2028+.

Eviation Alice is the most mature all-electric design, with a first flight in September 2022, but its commercial EIS has been pushed multiple times and remains unannounced. Battery energy-density limits will keep electric commercial flight on routes under 250 nm for the foreseeable future.

How Airlines Decide Which New Aircraft to Buy

New aircraft purchases are driven by five overlapping factors: fuel efficiency (the biggest single operating cost), range (does it open new routes the current fleet can't fly), capacity match (oversized aircraft on weak routes destroy yields), slot constraints at congested hubs (a slot at LHR is far more valuable than the incremental seat cost), and fleet commonality (training, spares, and maintenance overhead scale with type diversity).

The A321XLR is selling well because it satisfies four of those at once: 30%+ better fuel burn than the 757 it replaces, 4,700 nm range that opens transatlantic markets, narrowbody capacity that matches thin routes, and commonality with existing A320 fleets. The 777-9 is the opposite case: a slot-defender for hubs like DXB and LHR where an airline needs the largest possible aircraft per slot.