America’s busiest airports, including those in New York, Los Angeles, Dallas and Chicago, were set to face hundreds of flight cuts starting Friday due to the government shutdown, according to a list distributed to the airlines and obtained by The Associated Press.

The Federal Aviation Administration’s order to reduce air traffic at 40 of the busiest airports across the U.S. includes locations across more than two dozen states and is likely to ripple far beyond those targeted places.

With just hours to go, airlines were scrambling Thursday to figure out where to cut, and travelers with weekend plans were waiting nervously to see if their flights would takeoff as scheduled.

Some airlines planned to focus on slashing routes to and from small and medium-sized cities.

“This is going to have

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