The ending would have been so much better if....
They didn't show the plane catching fire and exploding.
It should have them on the plane, seeing the first film's characters and having us realize they are on Flight 180 in the year 2000, the same plane featured in the first movie.
Then the film should have had the two main characters sitting down and thinking they have escaped death, ending the film on a seemingly "happy note"
But, of course, we know that it isn't really a "happy ending" because we know what happens to Flight 180 from the first movie.
Would have been extremely cool IMO.
Men are guilty of all the good they do not do.