Americans are in for another day of travel uncertainty as fight delays and cancellations mount across the country.

Transportation Secretary Sean Duffy warned as many as 20% of flights could be canceled if the government shutdown drags on.

As the federal shutdown stretches into its third day of government-ordered flight cuts, over a thousand U.S. flights have already been canceled.

Follow our live coverage from Republic reporters on the effect of the federal government shutdown on air travel and Phoenix ...

Follow live updates on delays, cancellations and FAA impacts as airlines cut flights amid the government shutdown.