Major U.S. airlines were broadsided by the massive weekend winter storm that swept across large swaths of the country but had largely recovered heading into Monday, except for one. Southwest is suffering a disproportionate disruption. Of the 2,890 flight cancellations in the U.S. early Tuesday, 2,522 were called off by Southwest. The size and severity of the storm created havoc for airlines. Airports were overwhelmed by intense snowfall and drifts. Airlines cancelled as many as 20% of their flights Saturday and Sunday and Buffalo Niagara International Airport, close to the epicenter of the storm, remains closed Tuesday. The Department of Transportation said on Twitter that it was “concerned by Southwest’s unacceptable rate of cancellations and delays & reports of lack of prompt customer service.” The tweet said the department would look into whether Southwest could have done anything about the cancellations and whether the airline was complying with its customer service plan. Read more through the link in our bio.