Spirit Airlines offers a variety of low-cost flights out of Concourse A of the Baltimore/Washington International Airport. With check-in desks, ticket kiosks, and plenty of seating, the Spirit Airlines BWI Terminal has everything a passenger needs. Before boarding, there are stores and restaurants for last-minute necessities. Although Spirit usually has a short check-in process, it is advised to arrive early because they frequently charge extra for things like baggage or seat preference. All things considered, Spirit travelers have a simple and convenient experience with BWI.