What Terminal is Southwest Airlines at DTW? Southwest Airlines operates from the North Terminal (also referred to as Terminal N) at Detroit Metropolitan Wayne County Airport (DTW). This terminal offers a range of amenities, including dining options, retail stores, and comfortable seating areas, ensuring a smooth travel experience. Passengers can easily access efficient check-in counters, security screening, and baggage claim services. With free Wi-Fi, charging stations, and a convenient location about 20 miles from downtown Detroit, the North Terminal serves as a key hub for domestic and connecting flights on Southwest Airlines.