To board a flight, all domestic passengers are required to present one piece of valid government-issued photo ID that shows name, date of birth and gender, such as a driver's license or a passport. Passengers may also present two pieces of valid government-issued non-photo ID, at least one of which shows name, date of birth and gender, such as a birth certificate.
All passengers travelling to and from the United States are required to present a valid passport. Citizens of countries other than Canada and the United States should contact their consulate or embassy for boarding requirements. Proof of onward or return travel may be required at check-in.
For detailed information please visit:
http://cbsa.gc.ca
or
http://www.cbp.gov/xp/cgov/travel/vacation/ready_set_go/air_travel/