SAN FRANCISCO — Inbound flights heading into San Francisco International Airport face delays averaging two hours and 18 minutes Saturday evening as federal aviation controllers restrict incoming air traffic due to wind.
The Federal Aviation Administration put a ground delay program in place for SFO, meaning arriving aircraft are held at their departure cities to prevent airborne traffic jams over the Bay Area. FAA data shows the disruption impacts roughly 924 flights across the day.
While ground sensors report haze, four miles of visibility, and light surface winds, wind conditions aloft and runway alignment issues frequently force SFO to halt its side-by-side parallel landing pattern. When SFO loses the ability to land two planes simultaneously, arrival capacity drops nearly in half.
What This Means
Delays of this size break airline schedules. BTS data shows SFO maintains a 69.0% on-time rate over the last six months, with late flights averaging 68 minutes behind schedule. Today's 138-minute average delay is more than double that baseline.
The disruption is rippling across the national airspace. FlightCheck pipeline data shows 21% of inbound traffic to SFO is compromised, with four major feeder airports caught in their own bottlenecks. San Diego (SAN), which accounts for 7% of SFO's inbound volume, is under a ground delay. Boston Logan (BOS) is also managing ground delays, while Chicago O'Hare (ORD) and Atlanta (ATL) report departure delays on flights headed west.
Because planes bound for SFO are arriving hours late, outbound evening flights departing San Francisco will inherit those late turnarounds.
What To Do
If you are waiting to board a flight to SFO, track the physical whereabouts of your inbound plane using your airline's app. Scheduled departure times during a ground delay are unreliable; the actual departure time depends on the specific takeoff slot the FAA assigns to your aircraft.
If you are booked on a tight connection through SFO tonight, look at your itinerary immediately. A two-hour inbound delay will wipe out standard domestic layovers. Contact your carrier now to review rebooking options before you depart your origin, rather than competing for customer service agents at SFO gates.
If you are flying out of regional origins like Southern California, ask your carrier about rebooking into Oakland (OAK) or San Jose (SJC). Those airports have different runway configurations and rarely suffer the same capacity penalties from wind that plague SFO.
Outlook
Do not expect a quick recovery tonight. With nearly a quarter of inbound flights disrupted across multiple connecting hubs, airlines face a compounding aircraft and crew displacement problem.
Even if wind conditions improve before midnight, the FAA's metered arrival queue will take several hours to flush out. Expect rolling departure delays at SFO to stretch into late Saturday night, with some knock-on delays persisting for early Sunday morning departures.