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.
A similar position means the same type of seat (window, aisle etc) as your original selected seats. You can access Select Your Seat online at www.flightextras.thomson.co.uk or otherwise, pop in to your local Thomson shop or call us on 0203 636 1790 up to three days before your flight.f we do have to change your seat, weâll try to keep it as close to what you booked as possible. A refund will only be offered if we canât seat your group together and in a similar position to your original request*. In such cases, we ask that you keep a copy of your confirmation documents and boarding cards.