The Portland International Airport is administered by the city government of the Port of Portland in Oregon. The airport serves domestic and international travelers. It offers its facilities to several airline companies, including Air Canada, Alaska Airlines, American Airlines, Continental Airlines, Northwest Airlines, Horizon Air and US Airways. The Portland International Airport provides parking, ground transportation, storage, mailing, cargo and security services. The airport houses a conference center, restaurants and shops. It also operates several concourse service centers that feature ATMs, vending machines and workstations with phones, computer ports and cell phone charging outlets.