Reviews provided by RottenTomatoes
New York Post:
To the extent the film has an idea, it's that people can be at their worst (or best) in extremis, but the situations it devises (such as an armed looter who wanders in to steal some of Nolan's junk food) are blandly realized.
An ingeniously simple setup is cunningly exploited for maximum suspense in Hours, a slow-building, consistently engrossing drama.
Take away the on-the-nose title and some half-hearted stabs at symbolism, and what's left is a B-thriller of the "they don't make 'em like they used to" variety.
New York Daily News:
Most of the movie elicits tense empathy, which builds to a genuinely nerve-wracking sense of dread.
New York Times:
Hurricane Katrina has already been pretty thoroughly mined for documentaries and fictional stories, but "Hours" holds your interest nonetheless.
Hours has a great B-movie premise, but at 97 minutes, the strain of keeping the story going, and throwing more obstacles in Nolan's way, starts to show.
R. Kurt Osenlund,
There's something vexing about the use of a baby as narrative device, and the movie leans too heavily on her inborn potential for heart-tuggery.
Here's a hero who's maybe like you, suffering like you might but also scraping through like you hope you could.
New York Magazine/Vulture:
While uneven, the film is uniquely involving - right down to a final shot that will break your heart into a million pieces.
Walker's performance - along with the film - gets more and more engrossing.