Hey! If you have a Spirit Airlines BWI Terminal out of BWI Terminal, you will be departing from Terminal1 at Baltimore/Washington International Thurgood Marshall Airport (BWI). Check-in and baggage drop are located in the main terminal. So when you pass through security, getting to your gate will not be much of a challenge at all. A little something to snack before departing on your flight or some essentials for the trip can be garnered through lots of dining and shopping options available around, should you need them. The gates of Spirit operate conveniently in Terminal 1, so there are no bumps or worries related to traveling from Baltimore to your destination.