The company canceled thousands of flights around Christmas, disrupting travel for about two million people.

The airline canceled 16,700 flights before and after Christmas as it struggled to recover from bad weather.

The breach exposed information like names, addresses and phone numbers and lasted more than a month, the company reported in a securities filing.

Southwest Airlines’ chief executive, Bob Jordan, said frigid temperatures and mistakes by the company caused its meltdown around Christmas.

Southwest Airlines’ chief executive, Bob Jordan, said frigid temperatures and mistakes by the company caused its meltdown around Christmas.

NOTAM alerts — short for Notice to Air Mission — are crucial to planning flights.

The move will allow two new versions of the jet to be certified without major modifications, but it requires safety changes on all Max models.

United plans to take delivery of the planes over an eight-year span to refresh its fleet and increase fuel efficiency, with an option to buy...

The Transportation Department penalties come after many travelers have expressed frustration about flight delays, cancellations and other problems.

The carrier’s decision signals confidence in the 737 Max and in the demand for air travel.