Spirit airlines terminal iah Self-service kiosks and check-in desks are just a couple of the amenities this terminal offers to make your trip with Spirit as easy as possible. While awaiting their flight, passengers have access to a variety of shopping and food alternatives. There is a handy train system that connects Terminal A to other terminals. Options including ride-sharing, taxis, and rental cars are easily accessible for ground transportation. With its well-designed layout and necessary amenities, Terminal A strives to provide travelers flying with Spirit Airlines with a hassle-free experience.