Before you head to SFO, check the live outlook below — and if your flight is already disrupted, jump straight to your airline’s phone line at the bottom of this page.
Today’s on-time outlook for SFO
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Prediction from the Amadeus travel network, refreshed daily.
What disrupts SFO
SFO's famous fog is a geometry problem: its parallel runways sit too close for independent approaches in low visibility, halving arrival capacity on gray mornings. United's Pacific gateway hub means long-haul connections concentrate here.
Local knowledge: Fog-driven arrival programs usually lift by mid-morning — afternoon SFO arrivals are far more dependable in summer.
Flight delayed or cancelled at SFO? Do this
- Start in the airline’s app: accept the first workable rebooking, then work the phone for something better.
- Join the phone call-back queue while you walk to the service desk — whichever answers first wins. Numbers below connect directly to the airlines.
- Before you accept a voucher, spend three minutes on your rights — see the cancellation guide and compensation guide.
- Pull your flight up in the free status tool — gate and delay data lands there before the terminal boards refresh.
Major airlines at SFO — direct phone lines
Every number in our directory is the airline’s own published line — free, no middleman.
SFO delay questions
Is SFO delayed right now?
The prediction card at the top of this page refreshes daily from the Amadeus network. For a specific flight, check our live flight status tool — airport-wide averages matter less than your aircraft’s actual rotation. Fog-driven arrival programs usually lift by mid-morning — afternoon SFO arrivals are far more dependable in summer.
Which airlines dominate SFO?
United Airlines and Alaska Airlines carry the largest share of traffic at San Francisco International. Their direct customer service lines are listed above — during disruption, call the airline, not the airport.
Who do I call about a cancelled flight at SFO?
Always the airline operating your flight — the airport cannot rebook you. For example, United Airlines answers at 1-800-864-8331; every other carrier’s number is in our free directory.