article about the planned aircraft purchase, Delta "plans to order 100 to 200 narrow-body jets and seek options for 200 more, a possible record purchase."
Presumably the new planes will replace Delta's older DC-9, Boeing 757-200, and Airbus A320 aircraft. The new planes would be used on domestic routes.
From the Bloomberg article:
Delta will consider “large, medium and small” narrow-body jets, Chief Executive Officer Richard Anderson said yesterday in a separate weekly recorded message to employees.Speculation is that Boeing, Airbus, and Bombardier all may be asked to submit proposals for the order. This could be the largest single aircraft purchase to date by any commercial airline.
“It’s important we take a very long-term view of our fleet,” Anderson said.