On June 21, 2026, San Francisco International Airport reported a total of 225 delayed flights alongside 8 cancellations. This disruption has affected flight schedules throughout the day, impacting several airlines and routes.
Among the carriers experiencing operational issues were United Airlines, Frontier Airlines, SkyWest Airlines, and Air Canada. Flight delays and cancellations have notably affected routes between San Francisco and major destinations including Chicago, Montreal, New York City, Las Vegas, Rome, and Seville.
