Based at Houston’s George Bush Intercontinental Airport (IAH), Terminal A is home to. Easy access Southwest Airlines IAH Terminal to baggage claim, security checkpoints, and check-in counters characterize this well-organized facility. Travelers will find Terminal A convenient as it provides a range of amenities like dining options, retail stores, and seating spots. Domestic destinations are usually served by Southwest flights departing from IAH. Travelers are encouraged to arrive early for a smoother experience, especially during periods of high travel demand, and to utilize mobile check-in to save time.