US airline disruptions soared on Sunday as flight cancellations crossed 2,100, marking the highest since the federal government shutdown led to widespread operational cuts across the aviation sector.

Transportation Secretary Sean Duffy warned that air traffic across the country could “slow to a trickle” if the government shutdown extends into the Thanksgiving holiday season, when a lot of people make travel plans.

How many flights did airlines cancel over the weekend?

The slowdown, now in its third day, is beginning to cause more widespread disruptions across 40 of the United States' busiest airports.

Airlines reported at least 7,000 flight delays on Sunday and more than 1,500 on Saturday. On Friday, they cancelled more than 1,000 flights, according to FlightAware, a website that tra

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