Spirit airlines terminal iah in Houston, Spirit Airlines operates from Terminal A. This terminal offers a variety of amenities to make your travel experience comfortable. Passengers can find dining options, retail stores, and seating areas throughout the terminal. Spirit Airlines' check-in counters and boarding gates are clearly marked, streamlining the process for travelers. Terminal A is designed for efficiency, with straightforward security procedures and helpful staff to assist with any inquiries. The terminal also provides business facilities and charging stations to keep you connected. Overall, Terminal A is equipped to handle your needs, whether you're departing or arriving.