$603USD Toronto YYZ – Bucharest OTP, round-trip, everything included, flying on Air France, KLM, and/or Alitalia. You can route through Paris CDG, Amsterdam AMS, Milan MXP, or Rome FCO (though it seems like it’s easier to route through CDG or AMS). Can get as cheap as 5.9CPM.
This is a pretty good deal for European travel, and is available during Canadian (and American!) Thanksgiving. Available for October, November, and the beginning of December. Looks like you can have a short stay, or a long trip.
I found this while looking on kayak.com/explore/*. You can use ITA Matrix to search for availability/dates. You cannot book on ITA Matrix. For that, either use kayak.com, or book directly with the airline.
* Update: After finding this fare, I discovered that botato found it before me, and posted it to Flyertalk. Though I found it myself, I am not the first person to post it. Sorry botato!