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: 102,617
J2 means that DL is willing to sell two FC seats if the customers are willing to purchase a full fare (refundable, etc.) ticket.
Not every confirmed passenger selects a seat in advance.