Critical response
On the review aggregator website Rotten Tomatoes, 35% of 43 critics' reviews are positive, with an average rating of 4.62/10. Metacritic, which uses a weighted average, assigned the film a score of 35 out of 100, based on 11 critics, indicating "generally unfavorable" reviews. Audiences polled by CinemaScore gave the film an average grade of "B+" on an A+ to F scale.
Stephen Farber of The Hollywood Reporter gave the film a positive review, saying, "The picture has enough entertainment value to tickle its target audience and even offers a few chuckles for accompanying adults. A strong cast and bright – if uninspired – animation help to offset a thin story. Decent box office returns seem likely." Tasha Robinson of The A.V. Club gave the film a C, calling it a "Mild-mannered 3D animated film that consists largely of broad conflicts, broadly resolved. It's unchallenging fun for a younger crowd, but adults might feel like they're staring down a colorful 24-piece board puzzle, trying to figure out how such a simple activity could be drawn out over 90 minutes." Mack Rawden of Cinema Blend gave the film one star out of five, saying, "Every single facet of the film is at best, slightly below average and at worst, downright terrible." Stephen Whitty of the Newark Star-Ledger gave the film two and a half stars out of four, saying, "It provides a few smiles, and a decent amount of rainy-day, kiddie entertainment." Neil Genzlinger of The New York Times gave the film two and a half stars out of five, saying, "A children's movie about space-traveling blue beings that has lots of high-flying escapades but fairly low aspirations."
Jordan Riefe of the Boston Phoenix gave the film two out of four stars, saying, "This might please young kids but torment discerning parents." Michael O'Sullivan of The Washington Post gave the film two out of four stars, saying, "Just like its hero and his grounded starship, Escape From Planet Earth is, for much of the film, a decidedly earthbound adventure." Vadim Rizov of Time Out gave the film two out of five stars, saying, "The late Douglas Adams summed up Earth as "mostly harmless," a description that also applies to this eminently tolerable animated time-filler." Gregg Turkington of On Cinema gave the film five bags of popcorn, the highest possible score on the program. He however, described the decision to not include Brendan Fraser in the film itself as a mistake, stating "If you'd actually filmed him rather than animate him I think it would have been more enjoyable."
Alonso Duralde of The Wrap gave the film a negative review, saying, "It's a bowl of warm water into which no one has bothered to place a bouillon cube. The kids in the theater with me never mustered a single laugh or gasp of excitement. It's plenty o' nuttin'." Peter Howell of the Toronto Star gave the film two and a half stars out of four, saying, "No matter whether you call Escape from Planet Earth sincere homage or cynical thievery, it goes down well in its brisk 89 minutes." Gregg Katzman of IGN gave the film a 4.5 out of 10, saying, "Escape From Planet Earth looks fantastic and is sporting some commendable voice acting, but these qualities can't overcome a stale script and significant lack of laughs. Unless you have a young kid that wants to see it, I just can't recommend this one at all." Sheri Linden of the Los Angeles Times gave the film three out of five stars, saying, "It never discovers new worlds, but "Escape From Planet Earth is, in its genial way, escape enough."
Tom Russo of The Boston Globe gave the film two stars out of four, saying, "If "Escape" figures prominently into your February staycation plans, you won't feel like you've thrown your money away, but the kids won't still be buzzing about it when they get back to school, either." Roger Moore of The Seattle Times gave the film two out of four stars, saying, "The animation is what sells Escape from Planet Earth, with rich, textured surfaces – check out the fishnet webbing on Scorch's spacesuit, the paint worn off the hardware and the perfectly rendered 7-Eleven, where even the Slurpee (product placement in a cartoon?) shimmers like the real thing. But it's not worth paying 3D prices". Joe Leydon of Variety gave the film a positive review, saying, "A lightweight, warp-speed, brightly colored trifle that should delight small children and sporadically amuse their parents."