* Railroads: Arizona is also served by several railroads, including Amtrak, which provides passenger service between Tucson, Phoenix, and Flagstaff. The state also has a number of freight railroads, which transport goods and materials throughout the region.
* Airports: Arizona has a number of airports, including Phoenix Sky Harbor International Airport (PHX), which is the state's largest and busiest airport. Other major airports in Arizona include Tucson International Airport (TUS) and Flagstaff Pulliam Airport (FLG).
* Public transportation: Arizona has a variety of public transportation options, including buses, light rail, and commuter rail. The state's largest public transportation system is Valley Metro, which provides bus and light rail service in the Phoenix metropolitan area.