Just wanted to mention some great prices via Air Canada to Paris. The promo is for dates between Oct 16-Dec 10 and Dec 24-May 6 (no Fri or Sat departures).
I was looking at prices from Halifax (via Montreal or TO) for April 2017 and found flights, round trip, all in for $698 - and that's Canadian $. (I was looking at Apr 9-24). It says book by Aug 23, but the last email was offering the same deals booking by Aug 16, so I think these deals may be around a bit longer. I generally would use my air miles (AM) for one free ticket and pay for the other thru Heathrow, but this would be cheaper even using my free tix with AM - and I still get to keep my air miles and hopefully have enough for two free tix for the next planned trip.
I had been looking at flights in Oct as well and was finding the same great deal. I really hope they still offer these prices in a few weeks so we can book (unfortunately, hubby had a root canal/crown, insurance only pays so much, and that needs to be paid first).