Airlines stocks took off on Thursday, boosted by Delta reporting better-than-expected earnings and reinstating its full-year guidance. Here are the key chart levels to monitor for shares of three major U.

A Delta jet, carrying nearly 300 travelers and crew, incurred engine problems over the Atlantic before landing on an island in the middle of the ocean where passengers had to spend the night, officials said Thursday.

Delta Flight 127, which departed Madrid, Spain diverted to the volcanic island of Terceira in the Azores. Passengers were stranded 29 hours there.

Airline executives are turning their focus to premium cabins, where demand is holding up better than in the back of the plane.

After withdrawing its outlook in April, Delta is again forecasting a profit—though at a significantly lower level than originally projected.

The carrier will report earnings Thursday, providing an update on the health of the travel sector and the U.S. economy.

Delta Air Lines passengers spent a day on the remote Azores island chain, nearly 1,000 miles from the European mainland.

The airline’s upbeat outlook for the year has been dimmed by economic turbulence in the U.S. that made people hesitant to book flights.

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.

Svetlana Dali, who was found guilty of stowing away on a New York flight bound for Paris last year, was sentenced on Thursday to time served with one year of supervised release.