Terminals & gates at BWI
Baltimore, Maryland
Terminal layout at BWI
Baltimore/Washington International Thurgood Marshall Airport is organized into 4 terminals. Each one groups carriers and services together so that connections inside a terminal stay short and predictable. Inter-terminal travel is handled by a free shuttle, walkway, or — at the largest hubs — an automated people mover.
The terminal layout below reflects the standard configuration for BWI. Concourse letters and gate counts can shift slightly during construction, so always confirm your gate against the airport's official departure board the morning of your flight.
Terminal A · 44 gates
Terminal A is one of the primary departure halls at BWI. It holds approximately 44 active gates and a full slate of pre- and post-security amenities. Walking time from the security checkpoint to the farthest gate is roughly 22 minutes — useful to know if you cut it close.
Airlines based here
On-site amenities
- Local craft beer bar
- Interfaith chapel
- Family restrooms and nursing rooms
- USB and AC charging at every gate
- Mobile ordering for food pickup
Terminal B · 40 gates
Terminal B is one of the primary departure halls at BWI. It holds approximately 40 active gates and a full slate of pre- and post-security amenities. Walking time from the security checkpoint to the farthest gate is roughly 20 minutes — useful to know if you cut it close.
Airlines based here
On-site amenities
- Interfaith chapel
- Family restrooms and nursing rooms
- Airline lounges (Centurion, Sky Club, Polaris, Admirals)
- Duty-free shopping
- USB and AC charging at every gate
Terminal C · 35 gates
Terminal C is one of the primary departure halls at BWI. It holds approximately 35 active gates and a full slate of pre- and post-security amenities. Walking time from the security checkpoint to the farthest gate is roughly 17 minutes — useful to know if you cut it close.
Airlines based here
On-site amenities
- Interfaith chapel
- Self-bag-drop kiosks
- Local craft beer bar
- Duty-free shopping
- Airline lounges (Centurion, Sky Club, Polaris, Admirals)
Terminal D · 31 gates
Terminal D is one of the primary departure halls at BWI. It holds approximately 31 active gates and a full slate of pre- and post-security amenities. Walking time from the security checkpoint to the farthest gate is roughly 15 minutes — useful to know if you cut it close.
Airlines based here
On-site amenities
- Currency exchange
- TSA PreCheck lanes
- Walk-up rideshare pickup
- Family restrooms and nursing rooms
- Pet relief area
Connecting between terminals
If your itinerary routes you between terminals at BWI, give yourself extra time. Inter-terminal connections involve either a secure airside shuttle, a landside walkway that requires re-clearing security, or a people mover. Allow at least 45 minutes for a domestic-to-domestic connection and at least 90 minutes if you're transitioning between an international arrival and a domestic departure, since you'll need to clear customs and re-check bags.
Signage inside the terminal will direct you to the connection point. Look for "Inter-Terminal Transit" or the airport's branded shuttle name. Posted ride times are usually accurate but assume a wait of three to seven minutes during peak hours.