Flight number record
OO 4765
SkyWest Airlines · Denver to San Luis Obispo
- Route
- DEN → SBP
- Departs
- 11:30
- Flights
- 259
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4765, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
OO 4765 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.
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%
1 hour+ late
5.4%
National rate is 8.3%
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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Schedule
When OO 4765 flies
OO 4765 flies DEN to SBP without a single fixed slot. Its most common scheduled departure was 11:30, used on 127 of 259 flights, with 11:25 (42 flights) and 11:35 (31 flights) next.
- Departs 11:30127 flights49.0%
- Departs 11:2542 flights16.2%
- Departs 11:3531 flights12.0%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 11:30 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and OO 4765 runs level with that at 77.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
OO 4765 next to DEN to SBP
Every carrier on DEN to SBP combined arrived on time 78.5% of the time across 724 flights, so OO 4765 is about level with it. Across its whole network SkyWest Airlines managed 78.7%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4765thin sample | 259 | 77.6% | 48 min | 0.00% | B+ |
| All SkyWest Airlines on DEN–SBPthin sample | 259 | 77.6% | 48 min | 0.00% | B+ |
| All carriers on DEN–SBP | 724 | 78.5% | 70 min | 0.28% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4765 quarter by quarter
OO 4765 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.
- 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.
By weekday, OO 4765 did best on Tuesday at 86.5% on time and worst on Friday at 70.3%. Each day rests on about 37 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4765 runs when it is late
OO 4765 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 OO 4765
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 OO 4765 runs late
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 delay minutes reported on OO 4765.
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 routes
What a delay on this flight 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 same number turns up on five other city pairs in the data, including DEN to BOI (47), LAX to MSO (25) and DEN to SHV (21), but none flew often enough under OO 4765 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to SBP only.
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 OO 4765
For a booking, read OO 4765 as 77.6% on time with 0.00% cancelled over 259 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to SBP, every carrier and departure
- SBP to DEN, the return direction
- United Airlines 1550 on the same route84.1%
- Denver International (DEN) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.