What to know about the flight cancellations at US airports caused by the government shutdown

Hundreds of flights at the busiest airports in the U.S. are being scratched this weekend as airlines move forward with reducing air service due to the lingering government shutdown .

So far, the Federal Aviation Administration's mandated slowdown across the airline industry that began Friday hasn't caused any widespread disruptions . But it has widened the impact of what's now the nation's longest federal shutdown .

Analysts warn that the upheaval will intensify and be felt far beyond air travel if the cancellations pick up and move closer to the Thanksgiving holiday.

Already there are concerns about the impact on cities and businesses that rely on tourism and the possibility of shipping interruptions that could delay getting holiday items on store shelves.

Here’s what to k