I'm looking to visit a freind in Palma de Mallorca and since that flight would cost me about 500 bucks in Economy with minimal miles I decided to spend a little more to get most miles out of those flights: What I came up with was the following
ZRH-LH-
FRA-LH-
MUC-LH-
PMI in C Flex; 1000+2000+2000=5000 miles
PMI-LX-
GVA-LH-
MUC-LH(per flightradar24 the flight is operated under LH flight number while LX is only codeshare)-
ZRH in D Saver; 1200+2000+2000=5200 miles
Total: 10200 miles.
Price: CHF 1270.-
(For CHF 1452.- the return can be flown as PMI-MUC-FRA-ZRH in C Flex giving 5000 miles but it'd be Flex.)