Movie title?

it's kinda of an old movie but ti's about the plane and the fly into some riff in the space time continuum or something and they go into the past. and the only people that survive the trip are the ones that were asleep or unconscious or something? then they go back through the riff into the present or something. send me an email if you want more details. saw the movie a long long time ago. 2000-2003 though thats probably not when it came out. saw it on tv