- Flight Disruptions
- Thunderstorms halt flights at San Francisco International Airport, delaying 367 and canceling 17
Thunderstorms halt flights at San Francisco International Airport, delaying 367 and canceling 17
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Checked by Matteo Floris
Last updated on April 13, 2026
384
Affected flights
1
Affected airports
384
Affected flights
1
Affected airports
Disruption overview
Strong thunderstorms forced a temporary ground stop at San Francisco International Airport (SFO) on 11 April 2026 , pausing all arrivals and departures from 5:19 pm until about 6:45 pm. By 6:00 pm, the airport had recorded 367 delayed flights and 17 cancellations , with some delays expected to reach 160 minutes once operations restarted. Ongoing runway construction made the disruption harder to absorb, leaving SFO as the Bay Area's main bottleneck while nearby airports saw little impact. Because severe weather was the main cause, compensation is usually unlikely, but airlines should still provide care and assistance, including rebooking or refunds when needed.
Disruption details
Flights at San Francisco International Airport (SFO) were temporarily halted early on Saturday evening, 11 April 2026 , after a line of strong thunderstorms moved across the Bay Area. For passengers, this meant both arriving and departing flights suddenly stopped, followed by longer waits even after operations resumed.
The Federal Aviation Administration imposed a ground stop at 5:19 pm because of heavy rain, gusty winds, and lightning near the airfield. The pause was expected to last until about 6:45 pm, creating a shutdown of roughly 90 minutes.
During the stoppage, average delays for both arrivals and departures stretched to nearly 1 hour. Airport officials also warned that once the ground stop lifted, the backlog could push some individual delays to as long as 160 minutes.
By 6:00 pm, SFO had already logged 367 delayed flights and 17 cancellations linked to the weather. That means 384 flights were affected in just the early part of the evening, and airport management estimated that around 10% of the day's full schedule could feel the impact.
The disruption was harder for SFO to absorb because of an ongoing airfield construction project:
Runway 1 Right is closed for construction.
Runway 1 Left has been temporarily converted into a taxiway.
With fewer arrival and departure slots available, weather delays became more difficult to recover from.
That combination of thunderstorms and reduced runway capacity made SFO the Bay Area's main bottleneck. Other nearby airports, including Oakland International and San José Mineta, did not see notable disruption over the same period, showing how concentrated the slowdown was at San Francisco's main airport.
Conditions improved overnight, but the disruption did not end neatly with the evening ground stop. On the morning of 12 April 2026, the FAA warned that more delays were possible as weekend traffic built and scattered showers continued. FlightAware also logged 21 cancellations at SFO over the previous 24 hours.
The good news is that no injuries or safety incidents were reported. Airport officials expected operations to stabilize once the thunderstorm cells moved east of the Bay Area, and the disruption appeared to remain largely contained to SFO rather than spreading widely through the national network. Airport officials have not given a firm end date for the runway work.
Because severe weather was the main cause of this disruption, compensation is usually unlikely. For many passengers on US domestic routes, there is no automatic compensation scheme that applies in this kind of situation. Even so, that does not mean you are without support. If your flight was delayed or canceled, your airline should still help with rebooking or a refund, and provide food, refreshments, and overnight accommodation if your wait becomes long enough. If you would like to better understand what applies to your trip, AirHelp's free flight checker is a simple place to start.
Know your rights
Not Eligible – Extraordinary Circumstances These are your air passenger rights
When your disruption is caused by extraordinary circumstances — events beyond the airline’s control — you are not entitled to financial compensation, but you still have important rights to care and rebooking.
What counts as extraordinary circumstances?
These include: Severe weather conditions (storms, snow, volcanic ash, etc.) Air traffic control restrictions or strikes by third parties (e.g., airport staff) Political instability, security risks, or bird strikes Medical emergencies or unforeseen airport closures Such situations are recognized by EC 261, UK 261, Montreal Convention, and other international frameworks.
Care and assistance
Even when compensation is not owed, the airline must take care of you:
Meals and refreshments for long delays
Hotel accommodation and transport if you are stranded overnight
Communication
You are entitled to two phone calls or emails to arrange your plans.
Examples: Airport closed due to snow → no compensation, but hotel and food covered. Pilot strike → may qualify (depends on whether airline staff or external). Technical failure → usually eligible for compensation.
Quick facts
Summary
Disruption
Delays and Cancellations
Cause
Weather issue
Status
Current disruption
Compensation
Not eligible for compensation
Flights affected
384
Airports affected
San Francisco International Airport
Cities affected
San Francisco
Countries affected
United States
Start date
2026-04-11
Checked by
Matteo Floris
Date updated
April 13, 2026
What to do if your flight is delayed, canceled, or overbooked
If you're traveling to, from, or within the European Union, here's what you should do when you experience a disruption.
Gather evidence that your flight was delayed, canceled, or overbooked.
Get the airline to provide written confirmation of the disruption and the reason behind it.
Request an alternative flight to your destination — or a refund if you no longer wish to travel.
Make a note of the arrival time at your final destination.
Ask the airline to provide vouchers for meals and refreshments.
Avoid signing documents or accepting offers that may waive your passenger rights.
If an overnight stay is required, ask the airline to provide accommodation.
Save receipts for any additional expenses caused by the disruption.
