Southwest Airlines Terminal at PHX

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What Terminal is Southwest Airlines at PHX? Southwest Airlines operates exclusively out of Terminal 4 at Phoenix Sky Harbor International Airport. Terminal 4 is the airport's largest and most active terminal, designed to handle high passenger volumes with ease and efficiency. Travelers flying with Southwest Airlines can access numerous check-in counters, expedited security lanes, and a wide selection of retail stores, restaurants, and lounges. Terminal 4 also offers convenient ground transportation, free Wi-Fi, and accessible facilities for all passengers. Known for its customer-friendly services, Southwest Airlines ensures a smooth travel experience from this terminal.