Originally Posted by
wanaflyforless
SQ is out due to lack of award seats being available on all their newer configurations.
NH is your best bet. LH is not flatbed. OZ would work if you add an extra connections. EK would cost more miles because they are not Star Alliance are also are not a very direct routing.
TK to IST, OS to VIE, SK to CPH, and LX to ZRH are the ones you need to check. Some (all?) of those have flatbeds.
LX to ZRH and TK to IST are the only ones where a flat bed is possible, SK and OS have lie-flat. TK is a tricky one as they're in the midst of retrofitting their fleet from lie-flat to full flat, however, any TK 773/77W has a flat seat in C though.