Carrier route record
OODEN→SBP
SkyWest Airlines · Denver to San Luis Obispo
- Flights
- 321
- Period
- July 2025 to June 2026
- Share of route
- 44%
- Carriers
- 2
Historical statistics for July 2025 to June 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 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That is a workable record, not a spotless one. That rests on 321 flights, with a median arrival 2 minutes early.
The US average over the same twelve months is 77.6%, 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 321 completed flights
Avg delay
48 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.81%
Whole route
76.8%
Every carrier on DEN to SBP, 724 flights
These figures cover 321 flights between July 2025 and June 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.
Carrier by carrier
SkyWest against every carrier on DEN to SBP
SkyWest flew 321 of the 724 flights on DEN to SBP, about 44% of it. Its 77.6% on time is about level with the route as a whole at 76.8%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 77.6% to United at 76.1%.
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 |
|---|---|---|---|---|---|
| SkyWest Airlines (this page)thin sample | 321 | 77.6% | 48 min | 0.00% | B+ |
| United Airlines | 403 | 76.1% | 104 min | 0.50% | B+ |
Flight by flight
SkyWest flight numbers on DEN to SBP
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 321 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
December is the weak month at 61.3% on time, against 93.3% in November. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. January was the busiest month here, with 31 flights.
Across the week, Tuesday is the strongest day at 84.8% on time and Friday the weakest at 67.4%. 17 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
One category carries most of the weight here. Carrier accounts for 60% of the 3,460 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 60%Carrier
- 22%National Airspace System
- 14%Late-arriving aircraft
- 4%Extreme weather
The largest share of delay minutes, 60%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,059 of the 3,460 delay minutes reported here. The split is drawn from 3,460 reported delay minutes.
Cancellations are rare at 0.00%, below the national 1.81% 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
5.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg runs 78.0% on time across 321 flights, within half a point 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. 321 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. 321 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. 321 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.