Just an observation, but how the hell are the people in the plane going to explain what the hell happened?
Kate involved in 2 plane incidents, all the missing passengers, Claire showing up from the previous flight, Miles and Richard showing up from thin air.
It's a good thing it's over, or else the producers/writers would be totally screwed if they had to try to explain all of that.
I guess the obvious answer is they spend a lot of money to cover it up.