San Francisco International Airport has tested the patience of travelers this summer with a sharp rise in flight delays. Construction on key runways and new federal restrictions combined to slow arrivals and push many planes into holding patterns. United Airlines, the airport’s largest carrier, now reports progress on a solution that could ease the strain within weeks.
Why Delays Climbed Sharply
Runway repaving on SFO’s two north-south runways began earlier this year and is scheduled to continue until October. The work reduced available landing capacity at a time when summer travel volumes were rising. In late March the Federal Aviation Administration added another constraint by suspending simultaneous landings on the airport’s parallel runways for safety reasons.
The combined effect produced a 60 percent increase in significant delays compared with the first three months of the year. Last month roughly one in three flights arrived at least 15 minutes late. On some recent days the share of delayed arrivals reached 40 to 45 percent, with average ground delays stretching beyond 50 minutes during peak periods.
United’s Reported Progress With Regulators
United said it has worked directly with the FAA on a revised landing procedure intended to raise the number of arrivals per hour. Chief operating officer Toby Enqvist told analysts the airline expects measurable gains in landing rates over the next two to three weeks, though he stopped short of promising a full return to prior capacity.
Chief executive Scott Kirby separately noted that the end of runway construction in October should further improve operations. The airline described the recent construction as a major contributor to the current congestion. The FAA has not yet commented publicly on the details of the discussions.
Who Feels the Impact
Passengers on flights into SFO have absorbed the brunt of the slowdowns, including missed connections and extended airborne holds. One recent Alaska Airlines flight from San Diego was held on the ground because of an FAA ground-delay program at SFO. The airport ranks among the nation’s capacity-constrained hubs even in normal conditions, alongside other United focus cities such as Chicago O’Hare, Los Angeles International and Newark Liberty.
Airlines operating at SFO must adjust schedules and staffing while the restrictions remain in place. Cargo and connecting traffic also face ripple effects when arrival slots tighten.
What Travelers Can Watch Next
- Landing-rate improvements expected within two to three weeks if the new FAA approach takes effect.
- Continued runway work through October, after which full parallel operations should resume.
- Daily delay reports from FlightAware or the FAA that will show whether the changes are materializing.
- Possible schedule adjustments by United and other carriers as capacity recovers.
The coming weeks will reveal whether the coordinated steps between United and regulators deliver the promised relief before the busiest stretch of the summer travel season ends. For now, flyers into the Bay Area continue to plan for longer-than-usual arrival times.