The shocking video filmed from inside the aircraft shows the visible gap between the door and door frame, with a strange sound coming from the divide.
The Jin Air flight left Cebu International Airport at 1am and turned around about 30 minutes later, arriving back at the gate at 2:10 am to offloading the 163 on board passengers.
Airport authorities inspected the 16-year-old Boeing B737-800 jet and found nothing wrong with the door, which was then shut closed and ready to fly again.
The passenger plane was at an altitude of 10,000 feet when the cabin door was found open and one passenger thought he was going to die.
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