Chicago Sun-Times by Richard Roeper

Penna and his co-writer Ryan Morrison handle this existentially challenging material with grace, and Kendrick, Collette, Kim and Anderson deliver equally impactful, intense performances.

Film Threat by Alex Saveliev

Rather unexpectedly, the result is gripping and immersive, bolstered by a committed cast and some remarkable visuals.

IGN by Robert Daniels

Stowaway is shrewd in its decision-making and even better in its execution.

The Playlist by Asher Luberto

Stowaway is surprisingly decent despite the drag near the finale.

San Francisco Chronicle by Bob Strauss

If you can buy the film’s unlikely core premise, you’ll be rewarded with persuasive speculative fiction in all its other aspects. Penna and company make it easy for audiences to do that, while putting four people whom they’ll come to really care about through all kinds of hell.

Observer by Noah Berlatsky

Empathy and compassion aren’t vulnerabilities in this narrative. They’re resources, with which you can defy the cold cosmos — though not without cost.

The A.V. Club by Mike D'Angelo

The film is strongest when simply exploring the terrible notion of triage among the healthy, with everyone involved fully aware of which individual will be deemed the most expendable.

Time by Stephanie Zacharek

Stowaway pulls plenty of pages from the generic space-movie handbook, but it still builds a mood of dread and contemplative ennui, finding its resolution in a final, somber shot.

The Hollywood Reporter by Frank Scheck

The strength of the ensemble helps give the proceedings further dramatic resonance, with the performers providing subtle emotional depths that keep us firmly invested in the characters' plight.

Los Angeles Times by Jessica Kiang

For the most part, aside from a slightly slack start, and its stirring but simplistic ending, that kind of well-researched procedural detail is what makes Penna’s film such an engrossing and surprisingly touching addition to a genre already bursting with splashier, more extravagant and more overtly sentimental titles.