Charles M. Schulz - Sonoma County in November 2023

85.6%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In November 2023, reporting carriers scheduled 306 domestic departures from Charles M. Schulz - Sonoma County (STS). 85.6% left less than 15 minutes late and 82.0% reached their destination on time; 0.0% were cancelled.

Nationally that month, 86.0% of flights departed on time and 86.2% arrived on time, so STS departures were level with the national departure figure.

Flights arriving at STS that month were on time 84.0% of the time (306 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 35% and national aviation system 14%.

On time 82.0%
Arrived 15+ minutes late 17.6%
Cancelled 0.0%
Diverted 0.3%

Every scheduled departure from STS in November 2023, judged by arrival at the destination.

November 2023 against a year earlier, the airport's year and the nation

Measure	Nov 2023	Year earlier	STS, 12 months to Jul 2026	All reported flights, Nov 2023
Departed on time	85.6%	—	80.4%	86.0%
Arrived on time	82.0%	—	78.8%	86.2%
Cancelled	0.0%	—	1.7%	0.1%
Average departure delay (late minutes only)	10.1 min	—	13.2 min	9.4 min
Scheduled departures a day	10	—	16	18,793
Scheduled departures	306	—	5,714	563,777

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	224	73%	82.6%	6.1 min	0.0%
MQ Envoy Air	59	19%	79.7%	7.1 min	0.0%
AS Alaska Airlines	23	8%	82.6%	1.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
STS–PHX	Santa Rosa to Phoenix	59	88.1%	2.0 min	0.0%
STS–SAN	Santa Rosa to San Diego	58	82.8%	4.7 min	0.0%
STS–SEA	Santa Rosa to Seattle	50	84.0%	6.1 min	0.0%
STS–SNA	Santa Rosa to Santa Ana	47	83.0%	3.7 min	0.0%
STS–LAX	Santa Rosa to Los Angeles	39	82.1%	6.7 min	0.0%
STS–DFW	Santa Rosa to Dallas/Fort Worth	29	69.0%	14.7 min	0.0%
STS–BUR	Santa Rosa to Burbank	22	77.3%	10.8 min	0.0%
STS–PDX	Santa Rosa to Portland	2	50.0%	7.0 min	0.0%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), November 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Nov 2023	Minutes
Air carrier	34.6%	42.5%	1,062
Late-arriving aircraft	43.8%	37.3%	1,342
National Aviation System	13.5%	16.2%	413
Extreme weather	8.2%	3.7%	250
Security	0.0%	0.3%	0

3,067 delay minutes on 54 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left STS on time in November 2023?

85.6% of 306 scheduled domestic departures left less than 15 minutes late, and 82.0% reached their destination on time. The national figures that month were 86.0% and 86.2%.

How does that compare with a year earlier?

November 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for November 2023; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for STS · methodology · corrections.