Multiple Federal Aviation Administration (FAA) ground stops disrupted flight operations at San Francisco International Airport on November 9, 2026. The FAA issued several ground stops as dense fog and low clouds reduced visibility, causing widespread flight delays.
Flight Operations Affected by Ground Stops and Delays
The first significant ground stop commenced just before 8 a.m. Pacific Time and was lifted around 9:15 a.m. by the FAA. By approximately 10:30 a.m. Pacific Time, 187 flights had been delayed and three cancelled at San Francisco International Airport. Further ground stops were implemented around 10:28 a.m. and shortly before noon. The FAA managed traffic using ground delay programmes and held certain
departures at other U.S. airports to reduce congestion arriving at San Francisco.
Weather Conditions Causing Visibility Issues
Dense fog and low cloud cover led to significantly reduced visibility over San Francisco Bay during the morning of November 9, 2026. Visibility dropped to about 0.13 miles near the airport around 8 a.m., according to FAA records. The National Weather Service issued a dense fog advisory, warning that visibility along the bay shoreline could fall to one-quarter mile. Low ceilings and restricted visibility forced the FAA to use low-visibility operating procedures and increase spacing between aircraft, limiting airport capacity.
Impact on Travelers and Domestic Routing
The FAA’s ground stops caused flights bound for
San Francisco to be delayed not only at the airport itself but also at other U.S. airports where departures were held to prevent overcrowding in San Francisco’s airspace. These measures delayed passenger arrivals and could also affect subsequent flights that rely on timely aircraft rotations. Travelers with connections through San Francisco should expect potential delays and plan accordingly.
FAA Procedures and Airport Operational Status
Ground stops are temporary air traffic control measures designed to manage reduced airport capacity and do not indicate that San Francisco International Airport was closed. The FAA implemented these restrictions in response to low ceilings and visibility constraints documented on November 9.
San Francisco Airport, located adjacent to San Francisco Bay, regularly experiences coastal fog that can impair flight operations. The National Weather Service’s dense fog advisory reflected the challenging weather conditions that prompted the FAA’s traffic management decisions on that day.
