Airbus A350-900 vs Airbus A350-1000

The Airbus A350-900 and A350-1000 are a pair in the same way as the 787-9 and 787-10, but with a more generous split. The A350-900 is the baseline: 66.8 m long, about 300 to 350 seats in three classes, and a range of around 8,300 nautical miles with Rolls-Royce Trent XWB-84 engines. The A350-1000 is seven metres longer, seats 350 to 410, and, unlike the stretched 787, keeps and even extends its range to roughly 8,700 nautical miles, because Airbus gave it more powerful Trent XWB-97 engines, a strengthened wing with an extended trailing edge and six-wheel main landing-gear bogies to carry a 322-tonne maximum weight. The -900 entered service with Qatar Airways in 2015, the -1000 with the same airline in 2018.

That extra engineering is why the A350-1000 competes with the 777-300ER and 777-9 rather than merely with a stretched 787, and why it has sold to airlines that need a large aircraft on very long routes: Qatar, Cathay Pacific, British Airways, Virgin Atlantic, Qantas for its Project Sunrise flights and Air India. The A350-900 is the far more numerous aircraft, the long-haul backbone of Singapore Airlines, Lufthansa, Delta, Air France, Japan Airlines and dozens more, and in its ultra-long-range version it flies Singapore to New York, the longest scheduled flight in the world.

Passenger experience

The cabins are the same width, so economy on both is 3-3-3 with seats about 18 inches wide, a little roomier than a 787's, with the A350's quiet cabin, large windows with conventional blinds and a lower cabin altitude than older widebodies. The A350-1000 has more rows and usually a larger business class, which on some airlines means the newest suites go to the -1000 first. On both, the quietest seats are forward of the engines and the best economy seats are windows ahead of the wing; the rear rows near the aft galley are the ones to avoid, and the -1000's longer cabin makes that walk a little further.

Which to choose

For airlines the question is whether the extra fifty to sixty seats can be filled on routes long enough to need an A350 at all. Where they can, the -1000 has the lower cost per seat and the range to spare; where demand is thinner or the network is varied, the -900 is the more flexible tool, and most A350-1000 operators fly both. For passengers they are close to the same aircraft, with the -1000 slightly more likely to carry an airline's newest premium cabin.