The FAA’s unprecedented 10% flight reduction highlights long-standing air traffic control shortages worsened by the government shutdown.

Airlines in the US have cancelled more than 3 200 flights amid a top transport official’s warning that air travel could “slow to a trickle” due to the ongoing government shutdown.

U.S. airlines canceled more than 2,700 flights Sunday mostly because of the government shutdown and the Federal Aviation Administration’s order to reduce air traffic ...