On July 18, 2026, 4,896 flights were delayed and 126 cancelled across the United States. The disruptions affected major airports and airlines nationwide, significantly impacting scheduled operations.
Chicago O’Hare and Major Airports See Highest Disruptions
Chicago O’Hare Airport recorded the highest number of delays with 801 and 17 cancellations on July 18, leading all US airports in operational disturbances. Hartsfield-Jackson Atlanta faced 420 delays and 16 cancellations, while Orlando had 216 delays and 5 cancellations. In California, San Francisco reported 213 delays and 7 cancellations, and San Diego had 182 delays and 12 cancellations. New York metropolitan airports registered notable impacts: JFK experienced 115 delays and 4 cancellations,
Newark Liberty saw 87 delays and 4 cancellations.
Southwest Airlines Has the Most Delayed Flights; SkyWest Records Most Cancellations
Southwest Airlines faced the largest number of delayed flights, totaling 866 delays and 9 cancellations. American Airlines followed with 850 delays and 11 cancellations, affecting hubs such as Dallas-Fort Worth and Chicago O’Hare. SkyWest Airlines recorded 434 delays and led cancellations among carriers with 21 flights cancelled. United Airlines had 434 delays and 4 cancellations, with disruptions primarily at Chicago O’Hare and Newark Liberty.
Canadian Wildfire Smoke Reduces Visibility and Air Quality
Air travel disruptions on July 18 were driven by smoke from hundreds of active wildfires in Canada drifting south into the Northeastern United States. This smoke caused reduced
visibility across the New York metropolitan airspace, including JFK, LaGuardia, and Newark Liberty airports, complicating flight operations by increasing the spacing needed between aircraft. The poor air quality also extended into portions of New York, New Jersey, the Midwest, and the Northeast, where hazardous air quality alerts were issued.
Delays Ripple Through Major Hubs and Affect Large Public Events
Weather-driven operational challenges at Chicago O’Hare, Dallas-Fort Worth, Atlanta, and New York area airports generated cascading flight delays throughout the US aviation system. Smoke-related air quality issues affected outdoor spaces for travelers. MetLife Stadium in New Jersey, slated to host approximately 82,500 spectators for the FIFA World Cup Final on July
20, 2026, remains under smoky conditions that could impact attendee health.
The wildfire smoke affected regions across Illinois, Georgia, Florida, California, New York, and New Jersey. Airports including Chicago O’Hare, Dallas-Fort Worth, Hartsfield-Jackson Atlanta, Orlando, San Francisco, San Diego, JFK, and Newark Liberty bore the brunt of the disruptions. Travelers faced widespread delays and cancellations due to environmental factors impacting visibility and air quality across major US airline hubs on July 18, 2026.
