With less than a day before planned air traffic reductions, the Trump administration has not released the list of 40 airports that will face cuts, leaving many unsure how cancellations will unfold. The FAA has shared a preliminary, nonfinal list with airlines, officials say. Reductions are slated to start Friday at about 4 percent, deepening over the weekend to 10 percent, as announced by Transportation Secretary Sean Duffy and FAA Administrator Bryan Bedford. Targets include Core 30 commercial hubs, major cargo airports, and airfields popular with private jets.

Prepared by Christopher Adams and reviewed by editorial team.