Well, Flight 93 was reported to have landed at an airport in Cleveland, moved to a secure area, and evacuated. What happened to them or any of the other passengers is a mystery.
That reminds me- I saw an episode of "Blacklist' the other day, and part of it took place on the island. There was some rich family that was conducting private auctions (I think actually on the island). They were auctioning off, not only the James Spader character, who had been captured, but a young boy. It was somewhat disturbing because it really felt like this is how they do it. The child sat in a chair where people could look him over before bidding. Spader plays a fmr Navy Intelligence officer, and it made me think that such a fate may actually happen to white hats targeted by the cabal.