Departure Airport: YYC
Miles Needed (SQM): 20,000
Segments Needed (SQS): n/a
Dollars Needed (SQD): none
Maximum Budget: 3-4 kCAD
Available Travel Dates: Nov 11-21
Required Metal or Codeshares Okay:
Route(s) You've Already Searched: YYC-CPT, YYC-AUH

I am going to Frankfurt for a week, and looking to add a segment to boost my SQM. Any hints?
I check flights with Google flights, but multi-segment booking on AC.com is not working for me (second segment is always no flights available).
I considered RTW trip but economy fares were always Q or V, and premium economy out of my budget.
I have a pretty flexible schedule.
Thanks for suggestions!