Air Travellers Security Charge (ATSC): The Canadian Parliament has enacted the Air Travellers Security Charge Act to fund increased government expenditures on air travel security for travel in Canada in the wake of the events of September 11, 2001. For international itineraries, the Air Travellers Security charge is $25.91 CAD for all departures from Canada.
Airport Improvement Fees (AIFs): Many airports in Canada and around the world have implemented Airport Improvement Fees (AIFs). In some cases, airports collect these fees at the airport at time of departure; in others, the fees are collected at time of ticketing and are reflected in the additional charges portion of your fare.
Foreign taxes, fees and charges: Foreign governments impose various taxes, fees and charges to air carriers. Such fees are generally collected on a per-passenger basis and are imposed for a wide variety of reasons, but mainly to offset costs related to security, customs and immigration, transportation and airport infrastructure, navigational services, environmental and government facilitation matters.