Originally Posted by flyingnew

Why not do a BOS-SIN with a NRT stopover on the way back? In NRT, redeem 20K for a r/t NRTICN ticket. I think 1 stopover on the BOSSIN ticket is free. Otherwise, just do BOSSIN r/t and then redeem 40K for a SINICN r/t on UA via NRT in F. Then your out of pocket expense is the taxes on the SINICN UA XF ticket...