Porter Airlines (PD) is a Canada-based regional airline that flies to more than 20 destinations within Canada and the United States. Its fleet consists of single cabin Economy Class seating. The airline is known for the complimentary services that are included in the ticket price. These include free snacks and beverages onboard, as well as in their lounges (which all passengers can use) at Billy Bishop, Ottawa Macdonald-Cartier International Airport (YOW) and Newark Liberty International Airport (EWR). The carrier, which is based in Toronto, has a hub at Billy Bishop Toronto City Airport (YTZ). Porter also offers free shuttle service between downtown Toronto and the airport.