Originally Posted by
Twickenham
I'm not quite sure what was going on in your search, but I just ran the same search (YYZ-IST, IST-CDG, CDG-YYZ), and I had no problems getting options for all 3. And just to further emphasize the point, the random date I selected had no availability on the YYZ-IST TK flight, nor on any non-stop CDG-YYZ, so my final test itinerary ended up being YYZ-FRA-IST-CDG-YUL-YHZ-YYZ, which really pushes the limits of allowable mileage.
As another data point, I have YQB-YUL-IST-BCN booked for next summer, and have frequently seen YUL-IST-BRU offered by Aeroplan.ca, so I think either it's a glitch or your arrival/departure times on the connection didn't line up.
Pretty sure I've always seen YYZ-IST-
BCN/MAD/NCE/BRU/AMS/PRG
and obviously the closer ones to IST like FCO/ATH
Just did dummy search one-way for next week
I see via IST options to BCN, BRU, PRG
No CDG (could be just bad luck/timing)
Anyway, I only use IST for my Mini-RTW and not Europe so never a big deal for me. In fact, YYZ-IST-TPE (2 nonstops) is an easy Eastbound option to TPE for me and IST-TPE is even now on 777 I believe