I have browsed through websites, but have not found any sites that offer flights to Kiev or Lviv, Ukraine from Toronto, Canada for less than ~$1000 CDN.

Do you know of any really good websites, or any tricks that can allow one to get very cheap flight tickets? (By cheap, I mean somewhere between $800-$1000)

Perhaps any Ukrainian/Russian sites, as well as English ones.

Thank you.
Спасибо.