- Philadelphia International Airport (PHL) is the only major airport serving the 5th largest metropolitan area in the United States.www.phl.org
- Information about the airport's facilities and services.www.lvia.org
- Detailed information about the airport's facilities and services.www.flyhia.com
- FlyPittsburgh.com is the official website of the Allegheny County Airport Authority, operator of both Pittsburgh International Airport (PIT) and Allegheny County ...www.flypittsburgh.com
- Information about the services and facilities at Reading Regional Airport.readingairport.org
- flyavp.com
