https://www.mercurynews.com/2019/09/07/delays-and-cancellations-at-sfo-as-runway-construction-begins/ > SAN FRANCISCO — The closure of a busy runway at San Francisco International Airport kept scores of passengers from getting away on time, if they got away at all over the weekend. > By 7 p.m. Saturday, 343 flights into or out of the airport either had been delayed or cancelled entirely, according to the flight tracking site FlightAware. Ninety-seven had been cancelled entirely.