SAN DIEGO — Heavy air traffic triggered arrival delays averaging 34 minutes at San Diego International Airport on Friday morning, slowing incoming flights despite ideal flying weather.
The Federal Aviation Administration put a ground delay program in place to pace inbound traffic into the airport. A ground delay program holds aircraft at their departure cities to prevent terminal airspace from jamming, affecting an estimated 623 flights scheduled throughout the day.
Local weather is clear, with calm winds, 10 miles of visibility, and temperatures sitting at 63 degrees. The slowdown is driven by volume. San Diego operates the nation's busiest single-runway commercial airfield, meaning even standard morning traffic surges can saturate runway capacity and force air traffic controllers to space out arrivals.
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The pipeline feeding the airport is also under strain. A ground stop at San Francisco International Airport has temporarily halted departures there, directly threatening roughly 9% of San Diego's total inbound traffic.
Those late arrivals will trigger gate holdouts. Bureau of Transportation Statistics data from the last six months shows San Diego operates with a 75.8% on-time arrival rate. However, once flights fall behind schedule, delays average 57 minutes because single-runway operations offer little room to make up lost time.
Travelers flying to San Diego should check their flight status before heading to their departure gate. Because planes are being held at their origin cities, departure boards at connecting airports may show delays even if the local weather looks fine. Passengers scheduled to connect through San Francisco should check their airline apps for alternate routes down the coast before seats fill up.
With clear conditions across Southern California, operations will hinge entirely on runway pacing. Delays should hold near current levels through the morning rush before easing into the midday traffic lull.