No one paid for my airfare. But Emory paid for my hotel and food while I was there. I stayed another night to see the city and they paid for that as well. Their Idea actually.
my experience: none paid for airfare. those that paid for hotel: UF, wake, BU, MUSC, Dartmouth
those that did NOT pay hotel: cornell, SLR, MGH, BID--however, these were my top 4 (not in order), so don't let this influence your choice