A Long Island woman was killed when she tumbled out of a moving Airstream trailer — still clutching the door’s handle — and onto an upstate highway during a family road trip over the weekend, state police said.

Monika Woroniecki, 58, was in the 2024 silver trailer with other family members when she fell through the door shortly after 3 p.m. and onto State Route 12E in Watertown, police said.

Woroniecki’s husband, Robert, 59, was driving the gray 2019 Ram pickup truck pulling the trailer at the time, according to a press release.

Motorists who witnessed the frightening fatal fall said the passenger-side door of the Airstream flew open, helpled by the wind — while Monka Woroniecki was clutching its handle, police said.

The helpless woman landed on the shoulder of the highway, striking her head.

She was rushed to Samaritan Medical Center, where she was pronounced dead.

The traffic accident came as Woroniecki and other relatives boarded the trailer for the final 20 minutes of a road trip from Stony Brook, LI, where the family lives, the troopers said.