Passengers were evacuated from the plane using emergency slides, she said.
"Those developments, coupled with a more positive weather forecast for Chicago position us to safely operate our more than 250 departures out of Chicago Midway". The incident was first reported around 7:30 p.m. A few minor injuries were reported, but none requiring a hospital transport.
A departure board shows cancellation flights of Southwest Airlines at Chicago Midway International Airport in Chicago after a winter storm moving across the Great Lakes forced the cancellation of hundreds of flights on February 11, 2018. As of Monday morning, glycol used for de-icing had been replenished, according to a statement from Southwest.
The flight was carrying 139 passengers and 5 crew members, airport officials tweeted.
The carrier had encountered a similar issue before Christmas, when it was forced to cancel approximately 90 flights as harsh weather conditions prevented its de-icing crews from servicing its planes.
In a statement, the airline said its employees in Orange County were "working diligently" to make accommodations for passengers. A Southwest Airlines plane was evacuated at John Wayne Airport on February 12 after a fire in the aircraft's auxiliary power unit, officials said, Los Angeles Times reports.
The airport said its operations were back to normal.