Delta Air Lines is set to enhance its long-haul offerings in 2025 by expanding its fleet of Airbus A350-900 aircraft. As the exclusive operator of the A350 in the United States, Delta has grown its fleet to 38 of these aircraft since first introducing them in October 2017. The A350-900 has emerged as a flagship model for the Atlanta-based carrier, known for its exceptional range and capacity, making it ideal for long-distance routes.
Delta’s A350 Fleet Configuration
The A350-900 fleet, which Delta has steadily expanded, was initially acquired through an order of 25 aircraft. The first 15 A350-900s, delivered between 2017 and 2022, feature a cabin layout designated as ‘359’. This configuration includes 32 seats in Delta One (business class), 48 in Premium Select, and 226 in economy, totaling 306 seats.
In late 2023, Delta announced a new configuration, labeled ’35H’, which increases the number of Delta One seats to 40 and reduces the overall capacity to 275 seats. The airline’s strategy to accommodate the growing demand for premium seating has prompted this change. Moreover, Delta acquired nine ex-LATAM A350s during the pandemic, which are being retrofitted to the new layout, with the final conversion expected by October 25, 2025.
Delta’s Longest Routes Using the A350-900
Delta operates its longest A350 routes from three primary hubs: Atlanta, Los Angeles, and Detroit. The airline’s longest nonstop flights connect to Johannesburg and Cape Town in South Africa, both exceeding 7,000 nautical miles. Notably, Delta’s route to Johannesburg began in 2006 and has evolved from a refueling stop in Dakar to a direct service, now taking over 16 hours westbound.
In 2022, Delta resumed its nonstop service to Cape Town, operating three times weekly during the Southern Hemisphere winter and increasing to five weekly flights in peak summer season. However, regulatory restrictions limit Delta to a total of 23 weekly flights to South Africa, which it shares with United Airlines.
Delta’s competitive landscape also features its transpacific routes from Los Angeles to Oceania, including Sydney, Melbourne, and Brisbane. The airline currently offers daily flights to Sydney and recently launched a seasonal route to Brisbane, which has shown promising demand. A new route to Melbourne is scheduled to commence on December 3, 2025.
The airline’s top 10 longest A350-900 routes, measured in nautical miles, include:
– Atlanta to Johannesburg: 7,333
– Atlanta to Cape Town: 7,065
– Los Angeles to Melbourne: 6,883
– Los Angeles to Sydney: 6,507
– Los Angeles to Brisbane: 6,223
– Atlanta to Seoul: 6,215
– Detroit to Shanghai Pudong: 6,202
– Atlanta to Tokyo Haneda: 5,981
– Detroit to Seoul: 5,767
– Los Angeles to Auckland: 5,651
Delta’s operations to East Asia are also noteworthy, with four routes in its top 10 longest flights. The airline serves Seoul from five U.S. hubs, with the Atlanta to Seoul route being the longest and most frequent. The resurgence of flights to Shanghai underscores Delta’s commitment to the East Asian market.
Looking ahead, Delta has announced plans to introduce the Airbus A350-1000 model into its fleet beginning in 2026. This larger aircraft boasts a range advantage, which could facilitate even longer routes. The A350-1000 will feature a cabin layout that is over 50% premium, positioning Delta to capitalize on high-demand markets, particularly those with limited flight slots.
As Delta continues to adapt to changing passenger preferences, its commitment to expanding premium seating and enhancing long-haul routes remains a central aspect of its growth strategy.
