From NetFlix:

On a red-eye flight bound for Miami, Lisa learns that a fellow passenger has plans to murder the deputy secretary of Homeland Security — and that he wants to use her as part of the plot.

Cillian Murphy (his first name is pronounced “Killian” with a hard “K”) has those cold steel grey eyes that make him a perfect candidate to play a sociopath on a mission. Rachel McAdams is our Super Woman: beautiful, intelligent, friendly, determined, and a real fighter. Watching nasty Cillian ensnare our Rachel, especially as she understands bit by bit what is happening, is well-done. In fact, for me the best part of the film was that first part in the airplane in which the two play a game of one-upmanship. After she flees the airplane the rest of the plot is something that you have already seen in other films. Still, as in most suspense films, you have to see how it all turns out.

Give it a B. Not a total waste of time.