The 40 airports set to see a 10% reduction in flights during the government shutdown nearly matched the list of the nation’s busiest airports, according to a preliminary list seen by States Newsroom, potentially leading to thousands of flight cancellations across the country.

A 10% reduction at the listed airports would mean 3,300 canceled flights per day, according to Airports Council International-North America, the trade group for airports.

The Federal Aviation Administration had not released an official list of airports by early Thursday afternoon, but three sources familiar with the matter provided tables listing the proposed airports.

U.S. Transportation Secretary Sean Duffy said Wednesday that the FAA would cut air traffic at 40 major airports starting Friday to help alleviate stress for air traffic controllers who have been working without pay since the federal government shut down on Oct 1.

Busy Nashville, Raleigh-Durham not on listWhile there is significant overlap of the list with the nation’s busiest airports, there are some exceptions.

The busiest passenger airport not included was in Nashville, Tennessee, the 28th-busiest airport in the country in 2024, according to Airports Council International-North America.

Austin, Texas; St. Louis; Raleigh-Durham, North Carolina; Sacramento, California; New Orleans; Kansas City; and San Jose, California, were also among the 40 busiest airports that will not see reductions Friday.

Memphis, Anchorage and Louisville rank outside the top 40 for passenger traffic, but are the top three for cargo movement.

Oakland and Indianapolis ranked just outside the top 40 for passenger travel. Teterboro’s airport did not rank in the group’s top 50 busiest.

$327 million in daily economic output lost A 10% reduction at the listed airports would decrease economic output at airports by about $327 million daily, according to the council.