Most people getting hired by Air Canada have 3500+ hrs in their logbooks which would include a healthy whack of two crew large aircraft time. To get any amount of pilot in command time on a large aircraft will take you almost certainly 3-5years from license completion. Could you get to the majors? Almost certainly. Would it be worth it? That's the question you'll have to answer. A few things to consider. There's almost a zero chance you'll become a wide body captain in Canada for Air Canada or Westjet. Your pension would be very reduced because you won't be able to put in the required 35 years to get full pension at Air Canada. The very demeaning jobs you'll have to take to jump start your career may be too much to swallow at age 39. Is the risk worth the reward? How much do you hate your current job?