New Delhi, Nov. 8 -- Amid unprecedented government-imposed reductions in US flights as the shutdown drags on, people in America could face more trouble in coming days as US Transportation Secretary Sean Duffy on Friday warned that the government could force airlines to cut up to 20% of flights.

It was possible he could require 20% cuts later, said Sean Duffy.

Though the Transportation Secretary did not give any timeline, Duffy said that they are going to make decisions based on what we see in the airspace.

As the cuts began, over 1,200 flights from American Airlines, Delta Air Lines, Southwest Airlines and United Airlines were cancelled and 2,600 flights were delayed.

Forty airports were slated for the cuts, including major hubs in At...