A United Airlines flight landing at Chicago's O’Hare International Airport slid off the runway Friday afternoon, according to the Chicago Fire Department.
Fire officials said the Boeing 737 plane skidded into the snow-covered grass while landing at the airport.
United Airlines confirmed United Flight 734 from San Francisco to Chicago "partially rolled" off the runway. No injuries were reported, authorities and the airline said.
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"There were a couple of bumps and I was like, 'Oh, what just happened?'" said passenger Todd White.
According to United spokesperson Charlie Hobart, 179 passengers and six crew members were on board the flight.
"When I looked out the window there was snow and there were hills and I said, 'That is not how a runway should look,'" said passenger Leigh Honeywell.
The airline used buses to bring customers to their gate and the aircraft will undergo "a full inspection," Hobart said.
It's not clear what caused the skid, but officials say weather may have been a factor.
It's the second United Airlines flight to veer off the runway at O'Hare Airport in the last month.
On Dec. 30, a United Airlines flight from Seattle skidded beyond the turning point toward its gate.