Carrier route record
OODEN→SBP
SkyWest Airlines · Denver to San Luis Obispo
- Flights
- 259
- Period
- September 2025 to August 2026
- Share of route
- 36%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on DEN to SBP lands a B+, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That rests on 259 flights, with a median arrival 2 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate SkyWest on DEN to SBP from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.6%
Arrivals under 15 minutes late, of 259 completed flights
Avg delay
48 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
Whole route
78.5%
Every carrier on DEN to SBP, 724 flights
These figures cover 259 flights between September 2025 and August 2026. The median arrival is 2 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
SkyWest against every carrier on DEN to SBP
SkyWest flew 259 of the 724 flights on DEN to SBP, about 36% of it. Its 77.6% on time is about level with the route as a whole at 78.5%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from United at 78.9% to SkyWest at 77.6%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines | 465 | 78.9% | 82 min | 0.43% | B+ |
| SkyWest Airlines (this page)thin sample | 259 | 77.6% | 48 min | 0.00% | B+ |
Flight by flight
SkyWest flight numbers on DEN to SBP
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Departure window
When SkyWest runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 259 flights.
There are not enough flights in each departure window to split SkyWest's DEN to SBP record by time of day without the percentages moving on noise. The headline rate of 77.6% is the reliable figure here.
Across the year
SkyWest on DEN to SBP through the year
- Jul–Sep 202527 flights—
- Oct–Dec 202592 flights73.9%
- Jan–Mar 202690 flights76.7%
- Apr–Jun 202650 flights88.0%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 77.6% on time across 259 flights.
SkyWest on DEN to SBP did not run the same all year. Its best quarter was Apr–Jun 2026 at 88.0% on time and its weakest Oct–Dec 2025 at 73.9%, a swing of 14 points on roughly 86 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
Across the week, Tuesday is the strongest day at 86.5% on time and Friday the weakest at 70.3%, a spread of 16 points.
Arrival by arrival
How late SkyWest on DEN to SBP runs when it is late
SkyWest on DEN to SBP often beats the schedule: 67 of 259 completed flights, 26%, arrived 15 minutes or more early. The 58 late arrivals split 22 under half an hour, 22 between 30 and 60 minutes, and 14 an hour or more.
- 15+ min early67 flights25.9%
- Within 15 min134 flights51.7%
- 15–29 min late22 flights8.5%
- 30–59 min late22 flights8.5%
- 1–2 hours late10 flights3.9%
- 2+ hours late4 flights1.5%
Scale runs 0% to 100%.
Share of 259 completed flights by arrival against schedule.
8 of 45 late departures made up the time and arrived on time, 18% of them. In the other direction, 21 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SBP.
The worst days
Worst days for SkyWest on DEN to SBP
The latest arrival of the period was on 19 December 2025, 3 hours 51 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across December, March, January and February, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 December 2025 | 3 hours 51 minutes | National Airspace System |
| 15 March 2026 | 2 hours 32 minutes | Extreme weather |
| 3 January 2026 | 2 hours 27 minutes | Carrier |
| 1 December 2025 | 2 hours 11 minutes | Carrier |
| 17 February 2026 | 1 hour 50 minutes | National Airspace System |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 59% of the 2,798 delay minutes carriers reported here, and the remaining four split what is left.
- 59%Carrier
- 22%National Airspace System
- 13%Late-arriving aircraft
- 5%Extreme weather
The largest share of delay minutes, 59%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,652 of the 2,798 delay minutes reported here. The split is drawn from 2,798 reported delay minutes.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
5.4% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 50 minutes, which a normal layover absorbs.
The 931 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg runs 80.2% on time across 259 flights, within 3 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 259 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking SkyWest on DEN to SBP
Put together: treat all of this as provisional. 259 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 77.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 259 completed flights over 12 months sit behind that.
Related
Where to go next
- DEN to SBP, every carrier
- SkyWest on SBP to DEN, the return leg
- United Airlines on DEN to SBP78.9%
- SkyWest Airlines network-wide record
- Denver International (DEN) delay statistics
- The best day of the week to fly, and why it is the second lever
- How to read this site: grades, sample sizes, and honest caveats
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.