I don’t currently have access to real-time tool outputs in this turn, but I can summarize the situation based on recent reporting up to now. Direct answer

• A government shutdown-related measure was announced to reduce air traffic by about 10% at 40 of the United States’ busiest or high-volume airports. The goal is to ease workload and safety concerns given unpaid staffing and fatigue among air traffic controllers and related personnel.

Context and likely airports affected

• The airports are described as among the busiest or high-volume markets, including major hubs in Atlanta, New York, Chicago, Los Angeles, Dallas, San Francisco, Boston, Washington, and others. A precise, confirmed list of the 40 airports is typically published by the FAA and reported by major outlets as soon as the agency releases the official roster.

What this means for travelers

• Expect potential flight reductions, increased scheduling constraints, and more flight cancellations or delays at affected airports. Airlines and travel planners should monitor official FAA advisories and airline notices for the latest operational changes.

If you want, I can pull the latest confirmed list of the 40 airports and provide them in a clean, checked format with sources.