Southwest Airlines Baltimore Airport Terminal refers to the terminal at Baltimore/Washington International Thurgood Marshall Airport (BWI) where Southwest Airlines operates. Travelers flying with Southwest Airlines need to know this terminal for check-in, security, and boarding. Southwest Airlines primarily uses Concourse A and Concourse B at BWI, making it important for passengers to be familiar with the airport layout. It’s always a good idea to verify the terminal details in advance, as airport operations may change, ensuring a smooth and efficient airport experience.