San Luis Obispo County Regional in August 2025

81.2%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 August 2025, reporting carriers scheduled 420 domestic departures from San Luis Obispo County Regional (SBP). 81.2% left less than 15 minutes late and 79.0% reached their destination on time; 0.7% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so SBP departures were 4.4 points above the national departure figure.

A year earlier, in August 2024, the airport had 473 departures with 87.3% leaving on time: a change of −6.1 points, with flights down 11%.

Flights arriving at SBP that month were on time 82.3% of the time (419 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 52%, late-arriving aircraft 28% and national aviation system 17%.

On time 79.0%
Arrived 15+ minutes late 19.3%
Cancelled 0.7%
Diverted 1.0%

Every scheduled departure from SBP in August 2025, judged by arrival at the destination.

August 2025 against a year earlier, the airport's year and the nation

Measure	Aug 2025	Aug 2024	SBP, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	81.2%	87.3%	78.8%	76.8%
Arrived on time	79.0%	82.5%	75.3%	76.3%
Cancelled	0.7%	0.2%	1.2%	1.1%
Average departure delay (late minutes only)	15.8 min	14.1 min	20.9 min	17.6 min
Scheduled departures a day	14	16	14	20,079
Scheduled departures	420	473	5,010	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	291	69%	81.1%	0.1 min	0.3%
AA American Airlines	67	16%	77.6%	30.4 min	0.0%
AS Alaska Airlines	31	7%	64.5%	21.2 min	0.0%
UA United Airlines	31	7%	77.4%	31.9 min	6.5%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SBP–SFO	San Luis Obispo to San Francisco	93	75.3%	3.3 min	0.0%
SBP–PHX	San Luis Obispo to Phoenix	92	88.0%	13.6 min	0.0%
SBP–DEN	San Luis Obispo to Denver	62	72.6%	20.5 min	3.2%
SBP–LAX	San Luis Obispo to Los Angeles	60	90.0%	-4.0 min	0.0%
SBP–SAN	San Luis Obispo to San Diego	50	82.0%	-0.8 min	2.0%
SBP–DFW	San Luis Obispo to Dallas/Fort Worth	32	65.6%	16.6 min	0.0%
SBP–SEA	San Luis Obispo to Seattle	31	64.5%	21.2 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), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	52.3%	33.1%	3,519
Late-arriving aircraft	27.7%	40.5%	1,864
National Aviation System	16.8%	19.2%	1,130
Extreme weather	2.5%	7.0%	169
Security	0.6%	0.1%	41

6,723 delay minutes on 81 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 SBP on time in August 2025?

81.2% of 420 scheduled domestic departures left less than 15 minutes late, and 79.0% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 87.3% of 473 departures left on time and 0.2% were cancelled, against 81.2% and 0.7% in August 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for SBP · methodology · corrections.