Analysts expect that airlines will have a tepid earnings season as tariff uncertainty and declining U.S. dollar weigh on the industry.

Delta Air Lines shares surged after beating Q2 expectations and reinstating its full-year profit forecast. Stabilized demand, strong premium sales, and a positive Q3 outlook boosted investor sentiment across the airline sector.

Delta Air Lines was one of the top-performing stocks in the S&P 500 Thursday after the carrier reported better second-quarter results than analysts had expected and reinstated its full-year outlook.

Delta Air Lines Inc. reinstated a profit outlook for the year and said travelers are coming back, prompting its stock to surge amid a fresh sense of confidence in the beaten-down US consumer.

Delta Air Lines, the world’s largest carrier by revenue, reported upbeat second quarter results and reinstated its guidance as growing economic clarity deflects headwinds resulting from a global trade war.

Delta’s encouraging report boosted the entire airline sector. United jumped 14.3%, American climbed 12.7%, JetBlue gained 7.8% and Southwest finished 8.1% higher.

Delta Air Lines restored its financial guidance for the year, months after scrapping its initial outlook in response to the ongoing global trade war.

Delta posted strong growth from sales of higher-priced seats like first-class and from its lucrative American Express partnership, which increased 10% in the second quarter from the same period last year to $2 billion. Airlines have become more reliant on travelers who are willing to spend more to fly rather than more price-sensitive consumers.

The demand stabilization was enough to push Delta's top and bottom lines ahead of Wall Street expectations for the second quarter. Revenue was flat at $16.65 billion, in the quarter ended June 30, beating the $15.46 billion analysts were forecasting. Total revenue per available seat mile, a key industry metric, fell 4%, to 21 cents.