Variety by Joe Leydon

Ultimately, it’s extremely doubtful that any of this would work nearly as well as it does without Hartnett at the center of the storm, anchoring the bloody chaos and generating rooting interest with a performance defined by propulsive physicality, industrial-strength enthusiasm and an indefatigable willingness, even eagerness, to repeatedly make himself the butt of the joke.

TheWrap by William Bibbiani

Crackles with manic energy, fed at every turn by exhilarating fight choreography and a thoroughly game cast. Hartnett carries the whole silly, bone-crunching enterprise masterfully.

Film Threat by Alan Ng

Fight or Flight is the kind of blood-splattered airplane movie that knows exactly what it is and fully commits — like Die Hard 2 hijacked by the John Wick stunt team. It’s dumb in the best ways, fast in all the right places, and somehow still lets Josh Hartnett show us he can kick a*s and break hearts… even while microdosing by mistake.

The Daily Beast by Nick Schager

Amusing, energetic, and just clever enough to sustain its brief runtime, it serves up a boisterous and bruising brand of B-movie bedlam.

Washington Post by Ty Burr

Helmed by James Madigan, a second-unit director moving up to the big chair, from a screenplay by Brooks McLaren and D.J. Cotrona, “Fight or Flight” is high-spirited junk, too full of itself at times but mostly content to work out every last variation on a theme: How do you kill someone on an airplane?

RogerEbert.com by Clint Worthington

It’s a mid-budget riff on “Bullet Train,” after all—but meet it on its altitude, and it’s a bloody, funny good time.

The Hollywood Reporter by Frank Scheck

[Hartnett's] charisma and surprising flair for physical comedy elevate this B-movie into something approaching A-level status, even if it’s ultimately undercut by its low-budget limitations and awkward tonal shifts.

Collider by Aidan Kelley

It may not reinvent the wheel for tightly-knit actioners, but Fight or Flight still sticks the landing for a crowd-pleasing and chaotic thrill ride.

The Film Stage by Dan Mecca

Fight or Flight‘s enjoyment will rest on where you stand with Hartnett, his character, and his comedy.

Paste Magazine by Rory Doherty

The fight scenes will make you laugh more than the dialogue, and it doesn’t survive a bumpy landing, but led by Captain Hartnett, Fight or Flight takes advantage of its budget airline resources for a knowingly ludicrous romp.