A US Airways Group Inc. spokeswoman says a flight from Louisville, Ky., was diverted to Lexington when the regional jet's cabin didn't properly pressurize.
The passengers on Flight 2212 to Charlotte, N.C., were put on another flight Monday. None of the 73 passengers and crew was hurt.
Also Monday, a Northwest Airlines Corp. flight made an emergency landing for a second straight day.
An airline spokeswoman says Flight 126 from Minneapolis to Chicago made an emergency landing in Madison, Wis., after the pilot noticed gauges showed a loss of pressure.