San Luis Obispo County Regional in April 2025

82.4%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 April 2025, reporting carriers scheduled 507 domestic departures from San Luis Obispo County Regional (SBP). 82.4% left less than 15 minutes late and 80.1% reached their destination on time; 1.0% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so SBP departures were 1.8 points above the national departure figure.

A year earlier, in April 2024, the airport had 410 departures with 83.4% leaving on time: a change of −1.0 points, with flights up 24%.

Flights arriving at SBP that month were on time 82.4% of the time (507 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 25% and national aviation system 18%.

On time 80.1%
Arrived 15+ minutes late 18.7%
Cancelled 1.0%
Diverted 0.2%

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

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

Measure	Apr 2025	Apr 2024	SBP, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	82.4%	83.4%	78.8%	80.6%
Arrived on time	80.1%	80.2%	75.3%	79.5%
Cancelled	1.0%	1.2%	1.2%	0.8%
Average departure delay (late minutes only)	13.5 min	9.8 min	20.9 min	14.1 min
Scheduled departures a day	17	14	14	19,465
Scheduled departures	507	410	5,010	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	321	63%	76.9%	7.8 min	0.9%
MQ Envoy Air	96	19%	92.7%	-5.2 min	1.0%
AA American Airlines	30	6%	66.7%	14.1 min	3.3%
AS Alaska Airlines	30	6%	70.0%	14.4 min	0.0%
UA United Airlines	30	6%	96.7%	0.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SBP–SFO	San Luis Obispo to San Francisco	111	66.7%	16.8 min	0.0%
SBP–PHX	San Luis Obispo to Phoenix	106	89.6%	-4.3 min	0.9%
SBP–DEN	San Luis Obispo to Denver	60	93.3%	-4.8 min	0.0%
SBP–SAN	San Luis Obispo to San Diego	60	71.7%	10.0 min	5.0%
SBP–LAX	San Luis Obispo to Los Angeles	59	89.8%	-3.8 min	0.0%
SBP–DFW	San Luis Obispo to Dallas/Fort Worth	30	66.7%	14.1 min	3.3%
SBP–PDX	San Luis Obispo to Portland	30	90.0%	5.3 min	0.0%
SBP–SEA	San Luis Obispo to Seattle	30	70.0%	14.4 min	0.0%
SBP–LAS	San Luis Obispo to Las Vegas	21	81.0%	17.1 min	0.0%

By scheduled departure hour

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	24.8%	32.7%	1,646
Late-arriving aircraft	43.9%	39.4%	2,914
National Aviation System	17.9%	22.2%	1,189
Extreme weather	13.4%	5.5%	886
Security	0.0%	0.2%	0

6,635 delay minutes on 95 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 April 2025?

82.4% of 507 scheduled domestic departures left less than 15 minutes late, and 80.1% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 83.4% of 410 departures left on time and 1.2% were cancelled, against 82.4% and 1.0% in April 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 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.