http://travel.stackexchange.com/a/84229/4868https://travel.stackexchange.com/a/84229/4868 showed up in the LQP queue and, although the answer is incorrect (as noted in the comment), incorrect isn't one of the options when you attempt to flag the question.
The closest would be "very low quality" and "in need of moderator intervention" but I am not sure that those options fit.
I'm thinking that incorrect answers ought not be deleted - that that's what the down vote is for.