DOT is probing whether Southwest's schedules were 'unrealistic' during holiday meltdown

Key Points

• The DOT probe is looking at whether Southwest's schedules were "unrealistic."
• Transportation Secretary Pete Buttigieg has previously said he will hold Southwest accountable for the holiday meltdown.
• Southwest is scheduled to report quarterly results on Thursday.

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A Southwest Airlines passenger jet lands at Chicago Midway International Airport in Chicago, Illinois, on December 28, 2022.

Kamil Krzaczynski | AFP | Getty Images

The Transportation Department said Wednesday that it is in the initial phase of an investigation of Southwest Airlines' holiday meltdown and looking at whether the carrier's schedules was unrealistic.