Shares have struggled to take off this year, due to various headwinds, and according to Zacks, has underperformed the Zacks Transportation-Airline industry on a year-to-date basis.
Shares have gained 5.7%, whereas the industry has rallied 15.2%.
In the third quarter, analysts expect the US carrier by traffic to report net income of US$1.13bn compared to US$1.26bn a year earlier.
But revenue is expected to grow - to US$11.04bn, up from $10.48bn a year ago.
Last week, the carrier lowered its operating margin expectations, blaming a percentage point of the 2-3% decline on a $120 million hit from 2,200 flight cancellations due to Hurricane Irma.
Following that news, broker Stifel lowered its target on the shares to US$75 from US$80 previously, while maintaining a 'buy' rating.
Scrutinised this week will be fuel costs, which are expected to limit earnings growth in the three months.
The price per gallon is expected to be between $1.68 and $1.73.
Delta shares today lost 0.63% in New York to stand at US$51.68 each.