re: "oneworld" award (140K/280K/420K) Planning - The Definitive Thread
Sorry, I missed the point that you were looking at F. In that case look at keeping JFK-LHR-CPH but changing one of the later transits such as CPH-LHR-BCN to CPH-HEL-BCN or CPH-MAD-BCN. In my experience finding a decent J product within Europe short haul is difficult enough, let alone F. For example, CPH-MAD is only Y as far as I can see. About the only way you might get F out of CPH is to go via DOHA - a long, long way around.
If it were me, I would ring QF and ask what is available between CPH and BCN. If you get the right agent they can be very helpful. If not, ring back 10 minutes later and try again.
JV
