Prices are in Canadian Dollars.
Yes, there are multiple flights from Canada to Siteia for under C$ 1,400. The cheapest flight booked recently is on Multiple Airlines for just C$ 1,299, but on average you can expect to pay C$ 1,451.
There are no direct flights from Canada to Siteia, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
When deciding which route to take from Canada to Sitia consider Toronto Pearson Intl - Sitia, Montreal Pierre Elliott Trudeau Intl - Sitia or Winnipeg - Sitia as they are the most popular.