United Airlines, Delta Air Lines and other carriers began restoring flights to Puerto Rico and other parts of the Caribbean early Sunday after U.S. aviation authorities lifted temporary airspace restrictions imposed following U.S. strikes on Venezuela.

The temporary restrictions were set to expire at midnight Eastern time, U.S. Transportation Secretary Sean Duffy said in a post on X, clearing the way for airlines to resume most scheduled service on Sunday.

“Airlines are informed, and will update their schedules quickly,” Duffy said.

Thousands of travelers at the end of the New Year holiday period were affected after the Federal Aviation Administration ordered commercial aircraft to avoid parts of the region on Saturday, triggering hundreds of flight cancellations.

President Donald Trump said Saturday the strikes resulted in the capture of Venezuelan President Nicolas Maduro and his wife.