Many domestic airports in Canada also service international flights. According to Connecting Canada, 26 of Canada's airports service 94 percent of all travelers. The busiest airports in Canada by volume of travelers are Pearson International Airport in Toronto, Vancouver International in Vancouver, Pierre Elliot Trudeau International in Montreal and Calgary International in Calgary.
CATSA also has a full listing of items that are and are not allowed to be packed in carry-on or checked luggage. Each traveler is allowed two carry-on bags.
Cheapticketscanada.com, www.aircanada.com and www.cheapflights.ca all provide a wide variety of pricing and location options for domestic air travel.
The major airlines that fly domestically are Air Canada, Air Labrador, Canadian North, First Air, Jetsgo, WestJet Air and Tango.