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.

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

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.

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's revenue from premium seats like business class rose 6% in the first half of the year to $10.6 billion, while main cabin economy ticket revenue dropped 4% to $11.7 billion. The carrier, the most profitable U.S. airline, has said for years that its share of sales from high-end seats and its lucrative loyalty program has been growing.

Delta topped Wall Street expectations for the quarter and reinstated full-year guidance. The company is feeling much more upbeat about the quarters to come than it was three months ago, propelling the stock higher.

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

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 says flight attendants quickly extinguished a battery from a passenger’s personal electronic device on a flight from Atlanta.

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.