Originally Posted by
helahela
I need to make a triangle in two weeks LHR-NRT-CPT-LHR, but from CX website a single oneway trip looks ridiculously expensive.
I'm confused at this statement in conjunction with the OP.

If you need a triangular routing use a LONEWC3 ticket for the whole itinerary. (Apologies in advance if I'm missing the point here.)