what terminal is Southwest Airlines at DTW refers to the specific location of Southwest Airlines within Detroit Metropolitan Wayne County Airport. At DTW, Southwest Airlines operates primarily out of the McNamara Terminal. This terminal is known for its spacious layout and a variety of amenities, including dining options, shopping, and comfortable seating areas. Travelers looking for answers to “what terminal is Southwest Airlines at DTW” can easily find their way to the McNamara Terminal for a seamless travel experience.