Carrier route record
OOSBP→DEN
SkyWest Airlines · San Luis Obispo to Denver
- 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 SBP to DEN lands a B+, level with the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 321 flights, with a median arrival 7 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate SkyWest on SBP to DEN from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
78.0%
Arrivals under 15 minutes late, of 318 completed flights
Avg delay
92 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.81%
Whole route
81.2%
Every carrier on SBP to DEN, 724 flights
These figures cover 321 flights between July 2025 and June 2026. Beyond the headline rate, 11.6% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
SkyWest against every carrier on SBP to DEN
SkyWest flew 321 of the 724 flights on SBP to DEN, about 44% of it. Its 78.0% on time is 3 points worse than the route as a whole, which runs 81.2%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from United at 83.8% to SkyWest at 78.0%.
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 | 403 | 83.8% | 148 min | 0.74% | B+ |
| SkyWest Airlines (this page)thin sample | 321 | 78.0% | 92 min | 0.00% | B+ |
Flight by flight
SkyWest flight numbers on SBP to DEN
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 SBP to DEN record by time of day without the percentages moving on noise. The headline rate of 78.0% is the reliable figure here.
Across the year
SkyWest on SBP to DEN through the year
- Jul–Sep 202589 flights72.4%
- Oct–Dec 202592 flights75.0%
- Jan–Mar 202690 flights85.6%
- Apr–Jun 202650 flights79.6%
Scale runs 65% to 90%. 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 78.0% on time across 321 flights.
SkyWest on SBP to DEN did not run the same all year. Its best quarter was Jan–Mar 2026 at 85.6% on time and its weakest Jul–Sep 2025 at 72.4%, a swing of 13 points on roughly 80 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 86.7% on time and Thursday the weakest at 68.9%. 18 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 6,429 reported delay minutes.
- 30%Late-arriving aircraft
- 27%National Airspace System
- 26%Carrier
- 17%Extreme weather
Extreme weather accounts for 17% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.7 times the usual weather exposure. The split is drawn from 6,429 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.6% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
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 77.6% 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 SBP to DEN
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 78.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 318 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.