Pittsburgh International Airport is the fourth largest in the country. To give an idea of its size, O'Hare and Atlanta airports could be placed inside its borders. A trip between the two terminal buildings, the Landside and Airside terminals via people mover takes about 70 seconds. Moving sidewalks relay passengers from terminals to parking areas in about 11 minutes. The Landside terminal features ticketing, and a commuter flight terminal. A three-story atrium offers concessions and airport services in the Airside terminal building.

Parking facilities include a short-term parking garage at the terminal, long-term parking located on the moving walkway system, and luxury bus service facilitates an extended parking lot.