For years, booking a Delta One fare on an Airbus A350-900 was a bit of a lottery. Depending on which airframe showed up at the gate, you could find yourself in one of three very different cabins — including a dense 339-seat layout inherited from LATAM, complete with business class seats that forced window passengers to climb over a neighbour to reach the aisle. That era ended on October 25, 2025, when the last of those aircraft flew its final Delta service before heading to Singapore's Paya Lebar for a full reconfiguration.
The ex-LATAM jets have an interesting backstory. LATAM filed for Chapter 11 in May 2020 and retired its entire A350 fleet, putting nine young widebodies on the market just as most airlines were parking theirs. Delta, which had retired its Boeing 777s early in the pandemic, snapped them up to fill the capacity gap. But they arrived with LATAM interiors: 30 business seats in a cramped 2-2-2 layout, no Delta Premium Select premium economy cabin at all, and 246 economy seats. Premium seating made up just 9% of the aircraft, versus nearly a quarter on Delta's own configurations.
Delta has now settled on a single target: the 275-seat layout introduced in 2024, which is actually the least dense A350-900 configuration the airline has flown. It trades quantity for quality — 40 Delta One suites (up from 32 on the standard 306-seat layout), 40 Premium Select seats, 36 Comfort+ and 159 in the main cabin. Premium cabins account for roughly 29% of the aircraft. The logic is straightforward: on ultra-long routes like Atlanta to Johannesburg and Cape Town, where these jets are deployed, passengers are far more willing to pay for a flat bed with a door, and shedding 31 seats cuts weight on routes where range is tight. The jets flying those sectors are the 283-tonne higher-weight variant for exactly that reason.
Two layouts remain for now — the 275-seat premium configuration and the original 306-seater — as Delta works through a fleet-wide cabin redesign that debuted on the Boeing 757 in autumn 2025. The refresh covers every cabin, with wool-blend seat coverings in Delta One, memory foam cushions and deeper recline in Premium Select. The stated aim is consistency: the same materials, lighting and layout whichever aircraft operates your flight. Meanwhile, the larger A350-1000, 20 of which are on order, will seat 314 with a hefty 53 Delta One suites, continuing the premium-heavy direction.
For travellers, the practical takeaway is simple: the worst-case scenario on Delta's A350s is gone. If you're paying for Delta One on a long-haul route, you'll now get a 1-2-1 suite with direct aisle access and a door, regardless of the airframe — and the newest premium-heavy jets are increasingly likely on the longest sectors.
