Delta Air Lines, along with other major U.S. carriers, is adjusting flight routes to avoid Venezuelan airspace following a Federal Aviation Administration (FAA) security warning issued on November 21, 2025. The warning cites risks from increased military activity and GPS jamming in the region, which may lead to longer flight times or delays for certain routes. Adding to operational pressures, a jet fuel shortage at Seattle-Tacoma International Airport (SEA) is threatening to disrupt flights ahead of the busy Thanksgiving travel period. Caused by a pipeline leak, the shortage has Delta and other airlines preparing for potential delays, cancellations, and other schedule adjustments at the major West Coast hub. These specific challenges come as U.S. airports experience a high volume of delays and cancellations affecting thousands of passengers. Delta has been noted as experiencing delays due to significant passenger numbers and general air traffic congestion.