A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 100,466
Could there be issues with which fares can be combined with your previously flown L fare? Also, many cheap RT fares do not allow long stays at the destination, so there could be maximum stay constraints here that are affecting the cost of your ticket.