Flight number record
OO 5781
SkyWest Airlines · Denver to Aspen
- Route
- DEN → ASE
- Departs
- 20:25
- Flights
- 281
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5781, 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 5781 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 about 2.8 hours on average. That rests on 281 flights, with a median arrival 8 minutes early.
Key figures
On time
77.4%
Arrivals under 15 minutes late, of 257 completed flights
Avg delay
171 min
Across delayed arrivals only, not all flights
Cancelled
6.76%
National rate is 1.89%
1 hour+ late
7.0%
National rate is 8.3%
These figures cover 281 flights between September 2025 and August 2026. The median arrival is 8 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 5781 flies
OO 5781 flies DEN to ASE without a single fixed slot. Its most common scheduled departure was 20:25, used on 88 of 281 flights, with 20:49 (37 flights) and 20:20 (35 flights) next.
- Departs 20:2588 flights31.3%
- Departs 20:4937 flights13.2%
- Departs 20:2035 flights12.5%
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 20:25 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 5781 runs 7 points better at 77.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 5781 next to DEN to ASE
Every carrier on DEN to ASE combined arrived on time 74.2% of the time across 2,742 flights, so OO 5781 is 3 points ahead of 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 5781thin sample | 281 | 77.4% | 171 min | 6.76% | B− |
| All SkyWest Airlines on DEN–ASE | 2,742 | 74.2% | 96 min | 5.11% | C− |
| All carriers on DEN–ASE | 2,742 | 74.2% | 96 min | 5.11% | C− |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5781 quarter by quarter
OO 5781 did not run the same all year. Its best quarter was Jan–Mar 2026 at 87.5% on time and its weakest Jul–Sep 2026 at 59.2%, a swing of 28 points on roughly 56 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 202530 flights80.0%
- Oct–Dec 202549 flights80.9%
- Jan–Mar 202690 flights87.5%
- Apr–Jun 202656 flights74.5%
- Jul–Sep 202656 flights59.2%
Scale runs 50% to 95%.
By weekday, OO 5781 ranged from 73.7% on Sunday to 82.1% on Tuesday. With about 40 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 5781 runs when it is late
OO 5781 often beats the schedule: 90 of 257 completed flights, 35%, arrived 15 minutes or more early. The 58 late arrivals split 16 under half an hour, 24 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early90 flights35.0%
- Within 15 min109 flights42.4%
- 15–29 min late16 flights6.2%
- 30–59 min late24 flights9.3%
- 1–2 hours late8 flights3.1%
- 2+ hours late10 flights3.9%
Scale runs 0% to 100%.
Share of 257 completed flights by arrival against schedule.
7 of 56 late departures made up the time and arrived on time, 13% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for OO 5781
The latest arrival of the period was on 15 July 2026, 15 hours 40 minutes behind schedule; most of its delay minutes were filed as extreme weather. Three of the five worst days fell in July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 July 2026 | 15 hours 40 minutes | Extreme weather |
| 19 August 2026 | 14 hours 28 minutes | National Airspace System |
| 9 July 2026 | 14 hours 18 minutes | Late-arriving aircraft |
| 8 June 2026 | 14 hours 8 minutes | National Airspace System |
| 8 July 2026 | 13 hours 39 minutes | Extreme weather |
Delay causes
Why OO 5781 runs late
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 9,892 reported delay minutes.
- 34%Extreme weather
- 27%Carrier
- 26%National Airspace System
- 13%Late-arriving aircraft
Extreme weather accounts for 34% 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 quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 5.6 times the usual weather exposure. The split is drawn from 9,892 delay minutes reported on OO 5781.
Cancellations run at 6.76%, against 1.89% nationally. That is about one flight in fifteen cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
7.0% 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 about 2.8 hours, which a normal layover absorbs.
The same number turns up on three other city pairs in the data, including MFR to DEN (36), ORD to CVG (18) and ORD to TUS (2), but none flew often enough under OO 5781 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to ASE only.
One caution: this is a thin sample. 281 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 5781
For a booking, the cancellation rate is the figure to plan around on OO 5781: 6.76% of its 281 scheduled flights did not operate. A late arrival costs about 2.8 hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- DEN to ASE, every carrier and departure
- ASE to DEN, the return direction
- SkyWest Airlines 5769 on the same route74.0%
- SkyWest Airlines 5771 on the same route72.0%
- SkyWest Airlines 5779 on the same route69.5%
- SkyWest Airlines 5775 on the same route72.3%
- SkyWest Airlines 5773 on the same route77.4%
- SkyWest Airlines 5782 on the same route78.5%
- 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
- What a cancellation rate actually tells you (and what it hides)
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.