Here's a depressing little bit of information: if you survive a horrific plane crash in Alaska, you can still get eaten by wolves.
That's the premise of the movie, not really a spoiler. Unfortunately, that's pretty much the whole plot too. Details: Liam Neeson is the star, playing Ottaway. His job is to shoot wolves that approach his employer's Alaskan oil rig. He's kind of a moody guy; a scene near the beginning shows him contemplating blowing his brains out, and he keeps having visions of a lovely woman who, for reasons initially unspecified, is no longer available to him.
But he decides to go on living for a while, and gets on that doomed plane with other oil workers. Soon enough he and his raggedy co-survivors are going about the grim business of how to stay alive long enough to return to a civilized place—or at least a place where a guy isn't likely to be turned into instant Purina Wolf Chow.
The survivors are a contentious bunch, and there's a lot of very off-color language. You may not like the ending; Mrs. Salad hated it. And I liked it a little better than this guy, but this bears quoting:
On the other hand, see Andrew Klavan who liked it more than I did.