Originally Posted by
ExAAerOnDL
Also, thinking about this more if it's close to DOD, it's possible that DL simply zeroed out BE and opened up more Coach inventory on the theory that it is more likely to sell the coach seats than BE (although that's more commonly seen on three-class carriers, closing down F and opening up J so F would only sell to 5 of 15, but J would oversell to 47 of 37 - keeping the number of premium seats constant at 52). Not sure I've seen that as much on two-class service though.
I don't see why Delta wouldn't just keep both open if there are seats in business class. I mean, if someone is willing to purchase a business class fare and there was a seat available in the cabin, it makes little sense to force them to purchase a coach fare . . .