A downbeat outlook tarnished an otherwise strong quarter for Southwest, which topped profit estimates on robust holiday travel.

Southwest Airlines Co. warned that costs will climb faster than expected as it grapples with heavy labor expenses, ...

In a legal development that could affect the airline industry, two Southwest Airlines employees have filed a class-action lawsuit in the U.S. District Court for the Eastern District of New York ...

Delta and Southwest Airlines came out best ... Passengers were surveyed on their experiences in First/Business Class, Premium Economy, and Economy/Basic Economy. They were asked to rate their ...