By market close Tuesday, shares jumped 3.2% to $31.91, adding to an overall 16.2% gain over the year to date.
In company news, last week the airline announced plans to spend $770 million through 2016 refurbishing its aircraft fleet.
The Atlanta-based business said it would focus on refreshing the interiors of its narrow-body craft, Boeing 757-200, 737-800, Airbus A319 and A320 airplanes. Refurbishments include offering power outlets in each seat, updating bathrooms and adding more efficient galleys.
"We're continuing to make smart long-term investments in our products and services to meet the expectations of our customers," said Chief Revenue Officer Glen Hauenstein in a statement.
The investment is in line with Delta's strategy to improve all its flights. By mid-2014, Delta plans to have full flat-bed seats and direct-aisle access in its BusinessElite class in international wide-body aircraft and Wi-Fi access in its entire international fleet by 2015.
In other news, recent Federal reports rank Delta as the third-highest airline in terms of on-time flights, with an 88.3% on-time rate. Hawaiian Airlines ranked first with a rate of 93.9% on-time flights and Frontier Airlines came in last at 78.6%.
TheStreet Ratings Team has this to say about their recommendation:
"We rate DELTA AIR LINES INC (DAL) a BUY. This is driven by some important positives, which we believe should have a greater impact than any weaknesses, and should give investors a better performance opportunity than most stocks we cover. The company's strengths can be seen in multiple areas, such as its notable return on equity, good cash flow from operations, solid stock price performance, impressive record of earnings per share growth and revenue growth. We feel these strengths outweigh the fact that the company has had generally high debt management risk by most measures that we evaluated."