San Francisco International Airport is under a Federal Aviation Administration Ground Delay Program on August 12, 2026, with average assigned delays of 60 minutes and a maximum of 113 minutes as low ceilings meter arrivals. If you fly into SFO today, treat short connections as fragile until your airline shows a stable new arrival time.
Open the airline app before curb drop, accept same-day rebooking when it protects the rest of your trip, and do not rely on a one-hour Bay Area bank while the program is live.
- Airport: San Francisco International Airport (SFO).
- Program: FAA CDM Ground Delay Program for low ceilings.
- Average delay: 60 minutes assigned; maximum listed at 113 minutes.
- Window: arrivals estimated from 1530Z through 2259Z on August 12.
- Traveler action: recheck status, protect connections, rebook last-bank risk early.
What the FAA posted for SFO on August 12
The FAA ATCSCC advisory ADVZY 044 for SFO on August 12, 2026 declares a CDM Ground Delay Program. The control element is SFO. Impacting condition is weather and low ceilings.
Arrivals are estimated for 12/1530Z through 12/2259Z. Average delay is 60 minutes. Maximum delay is 113 minutes. Delay assignment mode is UDP. Program rates begin at 36 and step to 40 later in the window. Comments list arrivals and departures on runways 28L and 28R.
The advisory covers contiguous U.S. departures within a 1,625-mile scope, adds ZAU as an additional departure facility, exempts ORD and MDW from the departure table, and includes Canadian airports CYEG, CYVR, and CYYC. The delay assignment table applies to ZOA.
This weather program is not the same story as the morning structural note about staggered parallel approaches raising SFO arrival capacity. That change can help when ceilings allow higher rates. Today’s ADVZY still meters traffic because low ceilings are the binding constraint right now.
It is also a new day relative to the August 9 SFO hold Deep Arrival already covered. Use August 12 advisory numbers for decisions, not last weekend’s averages.
SFO travel alerts continue to flag reduced arrival rates and runway construction as ongoing capacity context for the Bay Area hub. Construction and procedure changes can stack with a weather GDP, which is why travelers should recheck both airline messages and airport alerts before leaving home.
How a 60-minute average hits Bay Area itineraries
A Ground Delay Program holds aircraft at the origin so SFO does not absorb more arrivals than low ceilings allow. Your departure city gate may still look green while an EDCT already pushes the San Francisco arrival past a connection or a ferry, train, or hotel pickup.
One-hour domestic connections into SFO are the first to fail. A 90-minute international bank can still break when the inbound carries a 113-minute maximum assignment and taxi or gate holds add more time after landing.
People leaving SFO later in the day feel the same program through late aircraft, crew limits, and cascading gate changes. A sunny break over the Bay does not automatically cancel a program that is still written through 2259Z.
Low ceilings at SFO often couple with marine layer patterns that look harmless from downtown but cut arrival rates on the 28 complex. Do not treat a clear Embarcadero photo as proof that the airport program has ended.
Travelers who need a flexible city plan after a late arrival can use Deep Arrival’s San Francisco things to do guide to rebuild the afternoon without locking dinner or tour times that assume on-time wheels-down.
United and other SFO hub carriers often move customers through app rebooking first. Take the protected same-day option when it preserves an international bank or the last practical ground connection, even if the new flight is later than you wanted.
Crew legality can turn a weather delay into a cancellation after ceilings improve. When a crew times out, the airline needs a replacement crew or a scrub, so improving rates late in the evening do not guarantee every delayed aircraft will still fly.
Ground transfers from SFO to downtown hotels or Silicon Valley meetings also absorb the delay. A 60-minute average arrival slip can push you past the last convenient BART or rideshare window you planned, so rebuild the ground leg after the air rebook is confirmed rather than the other way around.
What to do before you leave for the airport
Compare the airline app, the FAA advisory text, and SFO travel alerts in one sitting. Airline messages can lag program updates by several minutes when rates change.
Screenshot EDCT times, gate changes, and rebooking confirmations. If a hotel night or tour refund is needed later, timestamps beat memory of what the agent said at the counter.
If your connection at SFO is under about two hours, rebook proactively when the inbound already shows a long assigned delay. Waiting until you land airside with no seats left is the expensive path.
Bags checked through on one ticket usually continue when you rebook on the same record. Separate tickets mean reclaim and recheck. Ask before you leave the counter.
Drivers should add buffer for terminal roadway congestion when several delayed banks arrive together. A short curb delay can erase the last rebooking window at the ticket desk.
Canadian departures from Calgary, Vancouver, or Edmonton that fall inside the listed scope should confirm status before leaving for those airports. A clear sky at the origin does not remove an SFO arrival program.
Business travelers with morning meetings across the Bay on August 13 should prefer a protected evening arrival or a morning bank after the advisory window ends over gambling on a late inbound that still sits inside 2259Z.
Families traveling with strollers or mobility devices should budget extra time at the gate when several delayed aircraft arrive together. Jet bridge congestion and wheelchair service queues rise when banks bunch, even after the EDCT itself is finished.
If your airline offers hotel or meal vouchers only after a cancellation, do not assume a long delay alone qualifies. Ask the agent for the exact policy on your ticket while you are still at the counter and keep the written offer.
| If you… | What to do |
|---|---|
| Connect through SFO in under two hours today | Rebook early if the inbound already carries a long EDCT or delay. |
| Start your trip at SFO this afternoon or evening | Recheck gate and departure after the inbound aircraft lands and turns. |
| Hold fixed San Francisco tours after landing | Move or cancel free windows before no-show fees hit. |
| See only a later same-day option in the app | Take the airline rebook path first before buying a second ticket. |
| Depart from CYVR, CYYC, or CYEG into SFO | Confirm the program still includes your origin before you leave home. |
- Recheck before curb drop: EDCT and gates can move after you leave home.
- Protect short banks: rebook sub two-hour SFO connections while seats remain.
- Watch 2259Z: the advisory window covers evening arrivals, not only the midday bank.
- Separate construction context: runway work can still slow recovery after ceilings improve.
Three traveler checks settle the next move. First, read ADVZY 044 numbers for average and maximum delay, not only a social delay map. Second, compare your connection length with the 60-minute average and 113-minute maximum. Third, rebook or retime ground plans before you are stuck at a gate with no later seats.
Decision rule: if your SFO connection is under two hours or your Bay Area plan cannot flex, rebook or retime now while inventory remains.
Why is SFO delayed on August 12, 2026?
The FAA lists a low-ceiling Ground Delay Program that meters arrivals into SFO with an average assigned delay of 60 minutes.
How long does the SFO Ground Delay Program run?
ADVZY 044 estimates arrivals from 1530Z through 2259Z on August 12. Programs can end early or extend when ceilings and rates change.
What is the average delay into SFO under this program?
The advisory lists an average delay of 60 minutes and a maximum of 113 minutes.
Is this the same as the SFO staggered approaches news?
No. Staggered approaches are a capacity procedure. Today’s GDP is a weather metering program for low ceilings.
Should I rebook a short connection at SFO today?
Yes if the connection is under about two hours and the inbound already shows a long EDCT. Protect the rest of the trip early.
