San Luis Obispo County Regional in May 2026

75.5%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 May 2026, reporting carriers scheduled 424 domestic departures from San Luis Obispo County Regional (SBP). 75.5% left less than 15 minutes late and 73.1% reached their destination on time; 0.5% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so SBP departures were 1.6 points below the national departure figure.

A year earlier, in May 2025, the airport had 482 departures with 80.9% leaving on time: a change of −5.4 points, with flights down 12%.

Flights arriving at SBP that month were on time 79.2% of the time (424 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 59%, national aviation system 26% and late-arriving aircraft 12%.

On time 73.1%
Arrived 15+ minutes late 25.9%
Cancelled 0.5%
Diverted 0.5%

Every scheduled departure from SBP in May 2026, judged by arrival at the destination.

May 2026 against a year earlier, the airport's year and the nation

Measure	May 2026	May 2025	SBP, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	75.5%	80.9%	78.8%	77.1%
Arrived on time	73.1%	77.8%	75.3%	77.6%
Cancelled	0.5%	0.6%	1.2%	0.9%
Average departure delay (late minutes only)	26.2 min	19.1 min	20.9 min	16.0 min
Scheduled departures a day	14	16	14	20,391
Scheduled departures	424	482	5,010	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	251	59%	70.9%	14.2 min	0.8%
UA United Airlines	86	20%	67.4%	22.9 min	0.0%
AA American Airlines	73	17%	83.6%	49.8 min	0.0%
MQ Envoy Air	14	3%	92.9%	-2.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SBP–PHX	San Luis Obispo to Phoenix	103	85.4%	36.7 min	0.0%
SBP–SFO	San Luis Obispo to San Francisco	97	45.4%	32.9 min	1.0%
SBP–DEN	San Luis Obispo to Denver	62	77.4%	10.0 min	0.0%
SBP–LAX	San Luis Obispo to Los Angeles	62	90.3%	2.7 min	0.0%
SBP–DFW	San Luis Obispo to Dallas/Fort Worth	31	74.2%	13.3 min	0.0%
SBP–SAN	San Luis Obispo to San Diego	31	58.1%	28.8 min	3.2%
SBP–PDX	San Luis Obispo to Portland	19	94.7%	-0.7 min	0.0%
SBP–SEA	San Luis Obispo to Seattle	19	78.9%	3.9 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), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	58.8%	33.0%	6,526
Late-arriving aircraft	11.5%	40.4%	1,275
National Aviation System	26.3%	20.5%	2,919
Extreme weather	2.6%	6.0%	292
Security	0.7%	0.1%	81

11,093 delay minutes on 110 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 May 2026?

75.5% of 424 scheduled domestic departures left less than 15 minutes late, and 73.1% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 80.9% of 482 departures left on time and 0.6% were cancelled, against 75.5% and 0.5% in May 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2026; 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.