Secretary Sean Duffy issued the warning amid a growing number of flight delays at airports across the country.

The last time the US closed parts of its air space was in the wake of the 11 September 2001 attacks.View on euronews ...

Transportation Secretary Sean Duffy said the agency may need to close "certain parts" of the nation's airspace if the ...

Transportation Secretary Sean Duffy warned of "mass chaos" for air travel if the longest shutdown on record drags on.

U.S. Transportation Secretary Sean Duffy warned on Tuesday he could be forced to close some of the national airspace to air ...

The Department of Transportation may close some parts of the airspace if enough air traffic controllers don’t show up to work ...

Transportation Secretary Sean Duffy warned of “mass chaos” at the airports if the government shutdown does not end soon. He ...

The Department of Transportation might be forced to shut down the airspace in certain parts of the country if the government ...

The Trump administration's top official for transportation offered a fresh warning today that air-traffic controllers are ...

Airports across the country have already seen delays and cancellations due to staffing shortages as the shutdown continues.

The current government shutdown will become the longest in U.S. history if it continues into Wednesday.