The Transportation Secretary has ordered a 10% cut in flights at major airports due to air traffic safety concerns.

A small percentage of domestic flights were canceled on Friday, but Transportation Secretary Sean Duffy said the reductions, which were already going to increase next week, could sharply rise by the holidays if the shutdown continued.

Major airports appeared to be working largely as normal Friday as airlines canceled hundreds of flights across the United States, but widespread concern that the situation could worsen brought home the effects of

Transportation Secretary Sean Duffy announced 40 major airports would face a 10% cut in flights. See the full list of impacted airports.

Follow live updates as flight reductions begin today at 40 high-traffic airports in what officials have described as a "proactive" effort to alleviate pressure points.

Starting Friday, the FAA is reducing flights at 40 high-traffic airports, citing safety concerns amid the government shutdown.

Airline passengers were already looking at higher fares and packed planes this holiday season. But the holiday headaches might get much worse as the government shutdown causes flight reductions at major airports.

Here's what you're owed and what you can do if your flight is delayed or canceled by the ongoing government shutdown.

The government shutdown is causing canceled flights across the U.S. Here are the routes that are most likely to be canceled, according to a flight attendant.

Hundreds of flights across the United States were canceled starting on Friday, with deeper cuts looming in the coming days.

Flight reductions begin Friday at dozens of U.S. airports amid air traffic controller shortages due to the government shutdown.