Southwest Airlines said in an emailed statement that the flight was diverted to Jacksonville, Florida, after the issue occurred Monday. There were no injuries.
The airline says the captain initiated a controlled descent after the pressurization issue developed, and the plane landed in Jacksonville and taxied to the gate under its own power.
The aircraft was removed from service, and a replacement was brought in. The airline did not elaborate on the nature of the pressurization issue.
Southwest says the affected passengers arrived in Orlando four hours late.
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