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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: 100,417
Even if the OP used one way fares, if they're on the same itinerary, the total change fee for one passenger should be only $250 (one fee for changing the ticket), not $500.