Delta's revised passenger unit revenue forecast for the quarter ending December comes weeks after it came out with an improved number on its investor day last month.

Shares of the No. 2 U.S. airline by passenger traffic were up 2.2 percent at $50.56 in morning trading.

Delta said it expects passenger unit revenue, which compares sales to flight capacity, to be down 2.5-3.0 percent for the quarter, compared with its December forecast of a decline of 3 percent. http://bit.ly/2j98WW0

The airline had initially projected December-quarter passenger unit revenue to drop as much as 5 percent. The company said on Wednesday it expected capacity growth of about 1 percent in the quarter.

(Reporting by Ankit Ajmera in Bengaluru; Editing by Saumyadeb Chakrabarty and Shounak Dasgupta)