Flying Blue is not the only ST FFP that allows one-way redemption.
KE's Skypass also allows one-way awards on KE operated-flights.
Originally Posted by
apoivre
I think Flying Blue is the only Skyteam FFP that allows one-way awards, and even then it's only possible on AF, KL, NW and UX flights - *not* on KE (ICN-ULN) or SU (SVO-ULN)