YYZ-LHR-CPT via JNB sub $6k, sub 30c/mile
This is my first post to this forum so not sure if this is interesting to others but it was really great for me as I had to go to LHR for business anyway so I played around on ITA and found it was 5% to 10% cheaper for me to book a stop over in London for work for a week and then continue on to CPT than just fly YYZ to LHR on the days I needed to be there. You can likely fly Z class YYZ to LHR cheaper on other days (or thru Iceland!) but this was great for me as I wanted to visit CPT and this may be my only chance. Catch is 50 day advance booking but this worked out for me. Lots of options depending on days, I went AC and SA but LH, LX and TK were also possible. I was tempted by the A380 on LH until I learned this is not fully flat beds. This seemed to be the most miles possible but a stopover at IST was also possible. Now need to book hotel in CPT! Slightly cheaper fares were possible if not all *A.