On June 29, 2026, flight operations at four major U.S. airports—John F. Kennedy Airport in New York, Boston Logan International Airport, Miami International Airport, and San Francisco Airport—experienced significant disruptions. Across these hubs, a combined total of 55 flights were canceled while 638 flights were delayed throughout the day.
These disturbances affected services operated by JetBlue, Delta Air Lines, and American Airlines. Among the impacted routes were a number of international flights linking the United States with countries including the United Kingdom, France, China, Switzerland, Qatar, Australia, and Argentina.
