Is there a ground stop at STS today?
Live FAA delay status for Charles M. Schulz Sonoma County Airport (KSTS, Santa Rosa, CA): ground stops, ground delay programs and delays right now, what the FAA has listed for STS recently, and how often flights here actually run late.
No: the FAA is not reporting a ground stop at STS right now.
FAA NAS Status lists no ground stop, ground delay program, or delay event for Charles M. Schulz Sonoma County. Checked Oct 20, 2026 · 0027Z (5:27 PM PDT); this page refreshes about every two minutes.
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Recent FAA events at STS
Ground stops and delay programs the FAA has listed for STS in the last 90 days, from ATIS Alerts' own log of FAA NAS Status.
No ground stops, ground delay programs, or delay events recorded for STS in this window. The log is complete from 2026-09-22; earlier entries come from the ATIS Alerts bot's event history and cover only the latest event of each type.
Durations are the time the FAA kept the event listed. Log complete from 2026-09-22; older rows are the last event of each type seen by the ATIS Alerts bot since 2026-07-22.
How often is STS delayed?
Airline on-time performance at STS, Jun 2025 to May 2026, from the US DOT Bureau of Transportation Statistics.
5,282 scheduled airline arrivals and 5,279 departures in the period. Best month: Mar 2026 (89.6% on time); worst: Jul 2025 (67.2%). 27% of arrival delay minutes were charged to weather or the National Airspace System, the categories a ground stop or ground delay program falls under.
On-time arrivals by month
Bar = share of arrivals within 15 minutes of schedule; largest month had 590 arrivals.
What caused the delays
- 42%Late-arriving aircraft
- 31%Airline (crew, maintenance, ground handling)
- 18%National Airspace System (ATC, volume, non-extreme weather)
- 9%Extreme weather
- 0%Security
Shares of delay minutes on arrivals 15+ minutes late, as reported by the carriers to the DOT.
Source: BTS Airline On-Time Performance (reporting carriers; regional, cargo, and general aviation flights are not included). Published about two months after each month ends.
Weather at KSTS right now
Weather drives most ground stops: thunderstorms, low ceilings, wind and snow.
METAR KSTS 192353Z 21008KT 10SM CLR 18/07 A2986 RMK AO2 SLP106 T01780067 10200 20133 56017
What a ground stop at STS means
When the FAA issues a ground stop for Charles M. Schulz Sonoma County, aircraft headed there are held at their departure airports until it lifts; flights already airborne continue, hold, or divert. It is the FAA's most severe traffic-management step short of closing the airport, and it is usually issued in 30 to 90 minute increments that get extended while the cause persists, then often converted into a ground delay program as conditions improve.
Passengers:your aircraft is probably sitting at its origin; the airline's "delayed" status usually resolves in waves after the stop lifts. Pilots: a stop at STS ripples into the satellite airports and the whole TRACON; check the national board for programs at your alternate.
Terminology: ground stops explained · GDPs and EDCTs explained
Active FAA events nearby
Other airports in California with a delay event right now.
STS ground stop FAQ
How do I know if STS has a ground stop right now?
The banner at the top of this page reads the FAA's NAS Status feed about every two minutes. A red banner means the FAA currently lists a ground stop for Charles M. Schulz Sonoma County; green means it does not. The official source is nasstatus.faa.gov.
How long do ground stops at STS last?
We have not recorded enough ground stops here yet to give an airport-specific average. Nationally, most stops run 30 to 90 minutes per issuance, but a stalled line of storms can keep one extended for hours.
Does a ground stop mean my flight is cancelled?
No. It means departures to STSare held, not cancelled. Airlines cancel on their own when the backlog cannot be recovered, so watch your carrier's updates alongside this page.
⚠️ Informational only. FAA NAS Status is the authoritative source for delay programs; your airline or dispatch governs your flight. ATIS Alerts is not affiliated with the FAA.