Air travel disruptions continued on Wednesday, and officials warned that delays and cancellations may persist even when the government reopens .

The Department of Transportation on Wednesday night announced that 6% of scheduled flights at 40 of the nation's busiest airports will remain canceled on Thursday, rolling back the initial plan to increase cancellations to 8% on Thursday.

Secretary of Transportation Sean Duffy said there has been a decline in air traffic controller callouts since the weekend. He said it's a good sign that airlines may soon be able to resume normal operations.

"The FAA safety team is encouraged to see our air traffic control staffing surge, and they feel comfortable with pausing the reduction schedule to give us time to review the airspace," Duffy said

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