Arizona Shuttle offers van service between Tucson, Ariz., locations and Phoenix Sky Harbor Airport. In 2005, the company transported more than 100,000 passengers and 20,000 packages. Arizona Shuttle Service began in 1987. It picks up passengers at three Tucson locations and delivers to Phoenix Sky Harbor Airport. Passengers flying into Sky Harbor can check in and pay for shuttle service at terminals within the airport. America West, American Airlines, Delta, Frontier, United and Continental Airlines also use Arizona Shuttle as a connective service for their passengers. The company introduced a package delivery service in the 1990s. Arizona Shuttle offers charter services to conventioneers, school groups, alumni associations and business executives.