entropy

That's interesting. Didn't those use to be NW gates? Perhaps DL still holds the underlying lease on those or something like that.

The Florida flights aren't particularly surprising, in the winter there's sufficient local demand they can be flown profitably with the loads they anticipate. They "abandoned" CLE by killing most of the O/D RJ operation there because it was RJs. They have several other non-hub destinations from CLE (MCO, CUN, LAS, BOS, DCA, LGA, STL and MKE), some with multiple dailies, plus some seasonal leisure stuff. They do seem to think that it makes sense to keep those, its not insubstantial.