Southwest expects normal Chicago Midway operations after harrowing Sunday

Southwest Airlines crew members are seen de-icing an aircraft at Boston's Logan International Airport in 2014. The airline recently confirmed that a lack of de-icing fluid was responsible for flight cancellations in Chicago on Sunday

Hundreds of passengers were stranded at Midway Sunday, with deliveries of more de-icer not expected until Monday, according to the airline.

Flights departing and arriving from Chicago's O'Hare Airport didn't fare much better.

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. The airline said flight 2123 was pushing back from the gate when the ground crew observed a possible fire near the rear exterior of the aircraft.

Flights coming in and out of Midway were canceled on Sunday after the airport ran low on de-icer fluid.

More than 250 cancellations occurred at the airport, with most being Southwest flights.

As of Monday morning, "Southwest has resumed operations at Chicago (Midway) and expects to operate a close to normal schedule", a spokesperson for the airline confirmed to Travel + Leisure. The day after Christmas, the airline cancelled nearly 90 flights because of delays over de-icing aircraft.

A winter storm that dumped about 9 inches of snow on the Chicago area by Friday evening was followed by another 3 inches of snowfall Saturday night into Sunday afternoon, according to the national weather service.