Hundreds of flights into and out of San Francisco International Airport were delayed during the Fleet Week air show, according to a San Francisco Chronicle report that lays the disruption squarely on the annual aerial display over the Bay.

The Chronicle's account identifies the Fleet Week air show — the headline event of the week-long celebration that draws the U.S. Navy's Blue Angels demonstration squadron over San Francisco — as the cause of the delays. The scale, in the hundreds of affected flights, places the event among the more disruptive single-cause operational events at SFO in recent months.

Why does an air show delay hundreds of flights?

SFO operates with closely spaced parallel runways, a configuration that leaves little margin when airspace over the Bay is closed for aerial demonstrations. During the Fleet Week show windows, controllers must hold or reroute arrivals and departures, and the resulting backlog propagates through the day's schedule as aircraft and crews fall out of position.

The Chronicle does not specify in its report which show windows drove the worst delays, nor whether carriers cancelled flights outright or absorbed the disruption entirely through delays.

What is the operational context?

Fleet Week is a recurring, predictable event, which distinguishes this disruption from weather-driven ground stops. Airlines operating at SFO — the airport is a major international gateway — face a known airspace constraint each October, and the hundreds of delays reported by the Chronicle indicate the mitigation measures in place do not fully offset the closure's effect on throughput.

Delays at SFO also ripple beyond the Bay Area. Aircraft and crew rotations that pass through SFO connect to downstream flights across domestic and international networks, so a single afternoon of held arrivals can extend disruption into the following day.

What happens next?

Whether city officials, the FAA or SFO operator adjust show timing or airspace closures for future Fleet Weeks remains an open question, and the Chronicle's report now puts a measurable cost — hundreds of delayed flights — on the table for that discussion.