Delta has entered into agreements to add 29 used Boeing 737-900ERs and lease seven used Airbus A350-900s as it continues to streamline and modernise its fleet.

According to Delta CEO Ed Bastian, the 36 additional aircraft will improve fuel efficiency and enhance the customer experience, while supporting Delta’s fleet renewal strategy focused on simplification, scale, size and sustainability.

“These aircraft are an investment in Delta’s future,” he said. “As we look past the pandemic, Delta’s disciplined, innovative approach to fleet renewal positions us for growth as travel demand returns, while enhancing the customer experience and supporting our sustainability commitments.”

Bastian said the widebody fleet renewal is instrumental to Delta’s recovery, and will help position Delta for sustained profitability and future growth.

As Delta’s flagship aircraft, the A350 provides a world-class customer experience, enhances cargo capacity, reduces unit costs and contributes to a more sustainable future.

In addition to the seven A350s that are part of this announcement, Delta currently has 15 A359s in service and 20 on order. The addition of the 29 Boeing 737-900ERs will bring the total to 159 in Delta’s fleet.

The agreement follows Delta’s decision in April to exercise options on 25 additional A321neo jets, which will start to deliver next year and the carrier says those aircraft offer the lowest seat costs in Delta’s fleet.