Anxious travelers across the U.S. felt a bit of relief Friday as airlines mostly stayed on schedule while still cutting more than 1,000 flights largely because of the government shutdown .

Plenty of nervousness remained, though, as more canceled flights are coming over the next week to comply with the Federal Aviation Administration’s order to reduce service at the nation’s busiest airports.

The order is in response to air traffic controllers — who haven’t been paid in nearly a month as the shutdown drags on — calling out of work in higher numbers as they deal with financial pressure.

While it’s left some passengers making backup plans and reserving rental cars, the flights canceled Friday represented just a small portion of overall flights nationwide.

Passengers still faced

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