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.
You can select your seat online if: 1  You book your flight on aircanada.com., and. 2  You re travelling on: 3  Seat selection is not available on codeshare flights.4  an Air Canada or Air Canada rouge flight, or. 5  an Air Canada Express flight operated by Jazz, Sky Regional, Air Georgian Ltd. or Exploits Valley Air Services Ltd.ou can select your seat online if: 1  You book your flight on aircanada.com., and. 2  You re travelling on: 3  Seat selection is not available on codeshare flights.
At the other extreme, some extra legroom seats in Economy Class, with the same service and seat model, are also marketed as Premium Economy in some airlines. Air Canada: Premium Economy-on some International routes with new Boeing 777-300ER aircraft and on all Boeing 787 Dreamliner aircraft. [ 2 1]. 3  Air Caraibes: CaraÃ¯bes La Classe (Caraibes caraÃ¯bes long.  haul only