The light-year is a unit of length used to express astronomical distances. It is about 9.5 trillion kilometres or 5.9 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Because it includes the word year, the term light-year is sometimes misinterpreted as a unit of time.
Tango paid seat selection is only available when booking directly at aircanada.com/agents. All passengers including those booked on Tango fares can use web check-in and select their seat up to 12 hours before departure. Click here for more information on Air Canada s web check-in.ango paid seat selection is only available when booking directly at aircanada.com/agents. All passengers including those booked on Tango fares can use web check-in and select their seat up to 12 hours before departure. Click here for more information on Air Canada s web check-in.
You can check in at a Self-Service Kiosk if: 1  You are booked on an Air Canada or Air Canada Express flight* (flights with other airlines are not eligible); 2  You have purchased a paper ticket or an electronic ticket through aircanada.com, Air Canada Reservations, or your travel agent.he Self-Service Check-in kiosk will allow you to receive all of your required boarding passes, including those for any connecting flights. The Kiosk can give up to four boarding passes for connecting flights, as long as the flights are all part of the same reservation.