Regina Regina:
The cost of flying in Canada is stupid compared to the US. Seat sales and convenience are the only things that make it reasonable to do so. For our vacation in December it wasn't even close. With the extra cost to park and gas it was still 1/4 of the cost it would have been using Air Canada or WestJet.
My sister and her family drove to the Maritimes from Edmonton a few years back and it actually cost less to drive than it would have for all four to fly there and then travel around.
Still, compared to Europe, the US is over-priced too. North Americans pay more simply because the distances are usually much longer, there are fewer travellers (due to lower population density) and in most destinations, fewer airports (which means airlines pay more for landing rights). This is probably the only instance where people wish Canada had a hundred million people or so, as it would result in more travel, more competition and better prices.