Forget snakes on a plane — this flight came with its own haunted-house fog machine.

One traveler was left spooked recently when her plane cabin filled with fog so dense it looked like a scene ripped from a slasher flick.

TikTokker Giselle (@giselleinmotion) was flying from Bali’s Denpasar Airport to Melbourne, Australia, when the Jetstar flight turned into what she described as “the start of a horror movie.”

Before the plane had even taken off, condensation from the aircraft’s air conditioning system became so intense that others onboard could barely see a few rows ahead.

In a viral clip, bewildered travelers could be seen fiddling with their individual air vents in a failed attempt to clear the eerie haze.

“Something tells me the plane’s air conditioning is working overtime,” Giselle captioned the video.

In the clip’s voiceover, the Aussie passenger acknowledged that condensation can sometimes build up on planes when there’s a major temperature difference between the cabin and the air outside.

But…