Yes, you can walk from Terminal B to Terminal F at Philadelphia International Airport (PHL), but it is a significant distance. All terminals (A through F) are connected airside, meaning you do not have to exit security and go through TSA again. A walk from Terminal B to Terminal F typically takes about 25 to 30 minutes at a steady pace. Because Terminal F is primarily used for regional flights and is somewhat isolated, the airport provides a free airside shuttle bus to save you the walk. The shuttle stops are located near Gate C16 and Gate A1, and they drop you off directly at the Terminal F hub. In 2026, most travelers prefer the shuttle for this specific connection unless they specifically want to get some steps in or explore the shops and dining options located in the B/C connector along the way.