An air conditioning unit in Terminal 4 of the Phoenix Sky Harbor Airport was deactivated for routine maintenance and stayed off longer than expected.

Terminal 3 handles around a quarter of the airport’s traffic, which was around 52 million passengers in 2024. Existing gates were often at full capacity and are shared by Delta, United, Frontier ...

PHOENIX — A $326 million Phoenix Sky Harbor International Airport project will expand Terminal 3, according to a Thursday announcement from McCarthy Building Companies, Inc.