Updated Thursday at 9:25 a.m.:
More than 2,400 flights have been delayed or canceled at San Francisco International Airport since crews began repairing the base layer of a runway on Sept. 7.
As of Thursday morning, Flight Aware said 1,765 flights have been delayed and 663 canceled during the six-day period, but the numbers continue to rise.
The Federal Aviation Administration's website reported some arriving flights may "be delayed an average of two hours and 34 minutes," which has decreased since earlier in the week.
“The project is on track, exactly where we expect to be at this stage,” SFO spokesman Doug Yakel wrote in an email to KQED.
But some industry analysts are critical of the number of travel disruptions.
"There is plenty of responsibility for the problems to go around," said Henry Harteveldt, travel industry analyst at Atmosphere Research Group in San Francisco. "The airport, I think was very clear in what was going to happen, but I think the challenge is either the airlines did not fully understand the impact that this might have, or that they chose not to understand."
Other major airports that have undergone runway construction — such as John F. Kennedy International Airport, Fort Lauderdale-Hollywood International Airport and Los Angeles International Airport — "somehow managed these projects better," Harteveldt said.
Flight delays and cancellations at San Francisco International Airport continue this week after crews began repairing the base layer of a runway over the weekend.
Since Saturday, 800 flights have been delayed and 375 canceled, according to SFO spokesman Doug Yakel.
As of Monday morning, the Federal Aviation Administration's website reported some arriving flights may "be delayed an average of 3 hours and 45 minutes” due to the ongoing reconstruction.
“The vast majority of those are flights that were canceled in advance of this closure," Yakel said. "There are still some day-of cancellations that we're seeing, but most of those occurred in advance, in anticipation of this project."