A firefighter disappeared during a New York ski trip, and turned up in California six days later — with barely any memory of how he got there.

Constantinos “Danny” Filippidis, who lives in Toronto, was reported missing last Wednesday by skiing buddies who said they couldn’t find him when Whiteface Mountain near Lake Placid was closing, according to officials and local reports.

Nearly a week later, the married dad-of-two was found alone and disoriented in Sacramento — 2,900 miles away — wearing the same ski clothes but with a new iPhone and haircut.

The 48-year-old called his wife Tuesday from the airport in Sacramento, Toronto’s CTV News reported. She urged him to dial 911.

When cops found him, Filippidis said he remembered skiing and thought he’d suffered a head injury.

He told Sacramento County Sheriff’s deputies he didn’t remember how he’d gotten to the airport but that he rode in a “big rig-style truck” and slept “a lot.”

The truck had dropped him off downtown — about 11 miles from the airport — which is where he’d gotten the haircut, he said.

“It seemed to [the deputies] he had a significant amount of memory loss,” Sgt. Shaun Hampton told the Post-Standard.

Cops don’t believe drugs or alcohol are a factor in the bizarre incident and Filippidis, who is a fire captain, doesn’t have a history of mental illness or substance abuse, according to Toronto Professional Firefighters Association President Frank Ramagnano.

Filippidis is currently undergoing medical care and it is unclear when he’ll be returning to Toronto.

At the height of the search, more than 140 people spent a combined 7,000 hours searching the New York mountain, aided by search dogs and helicopters.

With Post wires