San Luis Obispo County Regional in April 2026

80.8%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 2026, reporting carriers scheduled 406 domestic departures from San Luis Obispo County Regional (SBP). 80.8% left less than 15 minutes late and 75.4% reached their destination on time; 0.2% were cancelled.

Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so SBP departures were 1.7 points above the national departure figure.

A year earlier, in April 2025, the airport had 507 departures with 82.4% leaving on time: a change of −1.6 points, with flights down 20%.

Flights arriving at SBP that month were on time 80.7% of the time (404 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, national aviation system 28% and late-arriving aircraft 25%.

On time 75.4%
Arrived 15+ minutes late 24.4%
Cancelled 0.2%
Diverted 0.0%

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

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

Measure	Apr 2026	Apr 2025	SBP, 12 months to Jul 2026	All reported flights, Apr 2026
Departed on time	80.8%	82.4%	78.8%	79.1%
Arrived on time	75.4%	80.1%	75.3%	78.9%
Cancelled	0.2%	1.0%	1.2%	0.9%
Average departure delay (late minutes only)	19.0 min	13.5 min	20.9 min	14.5 min
Scheduled departures a day	14	17	14	19,931
Scheduled departures	406	507	5,010	597,919

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	262	65%	73.3%	9.2 min	0.0%
UA United Airlines	64	16%	81.3%	30.1 min	0.0%
AA American Airlines	58	14%	74.1%	12.3 min	1.7%
AS Alaska Airlines	21	5%	85.7%	-5.0 min	0.0%
MQ Envoy Air	1	0%	100.0%	-12.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SBP–SFO	San Luis Obispo to San Francisco	90	42.2%	33.1 min	0.0%
SBP–PHX	San Luis Obispo to Phoenix	86	86.0%	-0.3 min	0.0%
SBP–DEN	San Luis Obispo to Denver	60	86.7%	22.8 min	0.0%
SBP–LAX	San Luis Obispo to Los Angeles	52	98.1%	0.4 min	0.0%
SBP–SAN	San Luis Obispo to San Diego	31	74.2%	9.4 min	0.0%
SBP–DFW	San Luis Obispo to Dallas/Fort Worth	30	60.0%	24.4 min	3.3%
SBP–PDX	San Luis Obispo to Portland	21	95.2%	-19.0 min	0.0%
SBP–SEA	San Luis Obispo to Seattle	21	85.7%	-5.0 min	0.0%
SBP–LAS	San Luis Obispo to Las Vegas	15	80.0%	5.3 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), April 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2026	Minutes
Air carrier	46.3%	33.5%	3,639
Late-arriving aircraft	25.3%	40.4%	1,990
National Aviation System	28.1%	21.0%	2,206
Extreme weather	0.3%	5.0%	20
Security	0.0%	0.1%	0

7,855 delay minutes on 99 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 2026?

80.8% of 406 scheduled domestic departures left less than 15 minutes late, and 75.4% reached their destination on time. The national figures that month were 79.1% and 78.9%.

How does that compare with a year earlier?

In April 2025, 82.4% of 507 departures left on time and 1.0% were cancelled, against 80.8% and 0.2% in April 2026.

Provenance

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