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Airport · 12 months to July 2026
San Luis Obispo County Regional: delays and on-time record
San Luis Obispo, California
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. Data through July 2026; this is a monthly history, not live airport status.
San Luis Obispo County Regional (SBP) in San Luis Obispo, California had 5,010 scheduled domestic departures by reporting carriers in the 12 months to July 2026, about 14 a day, on 9 routes.
78.8% of those flights left the gate less than 15 minutes late, 2.7 points above the national departure figure of 76.1%. Flights arriving at SBP were on time 79.4% of the time, 3.4 points above the national arrival figure of 76.0%.
1.2% of scheduled departures were cancelled (national: 1.8%), and the average departure delay, counting early and on-time departures as zero, was 20.9 min.
SkyWest Airlines is the largest reporting carrier at SBP with 59% of departures. Among carriers with at least 120 departures, Envoy Air had the highest on-time arrival share for its SBP departures (87.9%) and United Airlines the lowest (72.6%).
On-time departures are down 3.0 points on the previous 12 months (81.8%).
Of the delay minutes that carriers assigned to a BTS cause category for flights leaving SBP, air carrier 41%, national aviation system 25% and late-arriving aircraft 25%.
- On time 75.3%
- Arrived 15+ minutes late 23.1%
- Cancelled 1.2%
- Diverted 0.4%
As origin and as destination, against the nation
| Measure | Departures from SBP | Arrivals at SBP | All reported flights | SBP departures, previous 12 months |
|---|---|---|---|---|
| Departed on time (less than 15 min late) | 78.8% | 79.0% | 76.1% | 81.8% |
| Arrived on time | 75.3% | 79.4% | 76.0% | 79.9% |
| Cancelled | 1.2% | 1.2% | 1.8% | 1.1% |
| Diverted | 0.4% | 0.6% | 0.3% | 0.2% |
| Average departure delay (late minutes only) | 20.9 min | 17.3 min | 17.4 min | 17.2 min |
| Arrival delay minutes per 100 flights | 2,193 | 1,615 | 1,684 | 1,770 |
| Scheduled flights | 5,010 | 5,009 | 7,043,858 | 5,684 |
12 months to July 2026. The first column follows flights that left SBP; the second follows flights that landed there. Year on year, on-time departures moved −3.0 pts.
Airlines at SBP
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| OO SkyWest Airlines | 2,951 | 59% | 75.1% | 11.2 min | 1.2% |
| AA American Airlines | 877 | 18% | 73.2% | 27.8 min | 1.4% |
| UA United Airlines | 675 | 13% | 72.6% | 22.7 min | 1.0% |
| MQ Envoy Air | 315 | 6% | 87.9% | -1.7 min | 1.0% |
| AS Alaska Airlines | 192 | 4% | 78.1% | 3.5 min | 1.6% |
Departures from SBP by reporting carrier, ordered by flights; on time means the flight reached its destination less than 15 minutes late. Green is at or above the airport's overall share of 75.3%. Carriers fly different routes at different hours, so the rows are not a like-for-like test.
Busiest routes from SBP
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SBP–PHX | San Luis Obispo to Phoenix | 1,258 | 81.1% | 16.8 min | 1.0% |
| SBP–SFO | San Luis Obispo to San Francisco | 1,145 | 59.0% | 23.8 min | 1.2% |
| SBP–DEN | San Luis Obispo to Denver | 724 | 80.5% | 14.1 min | 0.6% |
| SBP–LAX | San Luis Obispo to Los Angeles | 634 | 87.9% | 0.7 min | 0.3% |
| SBP–SAN | San Luis Obispo to San Diego | 467 | 74.9% | 9.6 min | 3.9% |
| SBP–DFW | San Luis Obispo to Dallas/Fort Worth | 361 | 65.4% | 27.1 min | 1.7% |
| SBP–SEA | San Luis Obispo to Seattle | 220 | 79.1% | 3.2 min | 1.4% |
| SBP–LAS | San Luis Obispo to Las Vegas | 117 | 84.6% | -1.7 min | 1.7% |
| SBP–PDX | San Luis Obispo to Portland | 84 | 96.4% | -10.8 min | 0.0% |
Routes with at least 10 flights a month have their own page.
Month by month
By scheduled departure hour
Among hours with at least 100 departures, 5 pm to 6 pm had the highest on-time share (90.3% of 226 flights) and 2 pm to 3 pm the lowest (70.3% of 444).
Delay causes
Cancellations by reported reason (61 in the period): air carrier 15%, weather 54%, national aviation system 31%, security 0%.
Checkpoint volumes
TSA publishes daily checkpoint passenger counts for the country as a whole, not for SBP on its own. The national series through September 2026 is on the checkpoint volumes page.
Questions and answers
How often do flights leave SBP on time?
78.8% of the 5,010 scheduled domestic departures in the 12 months to July 2026 left less than 15 minutes late; the national figure was 76.1%. 1.2% were cancelled.
How often do flights arrive at SBP on time?
79.4% of 5,009 scheduled arrivals were on time by the BTS definition, against 76.0% nationally.
Which airline has the highest on-time share at SBP?
Counting departures from SBP and whether they reached their destination on time, Envoy Air had the highest share (87.9% of 315 flights), then Alaska Airlines (78.1%) and SkyWest Airlines (75.1%). Carriers fly different routes at different hours, so the figures are not a like-for-like test.
What causes delays at SBP?
For departures from SBP that reached their destination 15 or more minutes late, carriers attributed the delay minutes as follows: air carrier 41%, national aviation system 25%, late-arriving aircraft 25%, extreme weather 9%, security 1%.
What time of day has the highest on-time share at SBP?
Departures scheduled from 5 pm to 6 pm local time left on time 90.3% of the time, the highest of any hour with enough flights to compare; 2 pm to 3 pm was lowest at 70.3%.
Is it getting better?
On-time departures for the 12 months to July 2026 were 78.8%, down 3.0 points on the previous 12 months (81.8%). The monthly chart shows each of the last 36 months, and each month has its own page.
Does this page show today's delays at SBP?
No. BTS publishes on-time records about two months after the month ends, so this page is a monthly history through July 2026. For live conditions use the FAA airport status service or your airline.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026; airport name from the BTS airport lookup table. US government works in the public domain. Domestic scheduled flights by reporting carriers only: international flights, charters and smaller carriers are not in the source. Totals and averages only; no individual flight or aircraft is identified. See the methodology; report processing errors through corrections.