United Airlines, Delta Air Lines, and American Airlines issued stark operational warnings to travelers on March 11, 2026.

The ongoing U.S. government shutdown is causing widespread disruptions across major domestic airports. Strained Transportation Security Administration (TSA) resources are the primary driver of these delays.

A reduction in active TSA personnel is directly impacting security processing times and flight schedules. Major hubs including Chicago O'Hare, New York JFK, and Los Angeles International Airport report the most significant disruptions.

Airlines are advising passengers to prepare for extended security wait times and potential flight cancellations.