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.
Once these details have been entered, you will be taken to a seating plan where you can begin to select your desired seats. 1  Thomas Cook Click here to pre-book your seats. 2  Manos Click here to pre-book your seats. 3  Airtours holidays Click here to pre-book your seats.4  Thomson Click here to pre-book your seats.f you booked on or after 30 April 2015: Most airlines now offer the choice to select your seat when you check in online, including Easyjet and Ryanair. You will be given various payable options, including confirming leg room seats.