Flight number record
OO 5776
SkyWest Airlines · Aspen to Denver
- Route
- ASE → DEN
- Departs
- 15:25
- Flights
- 334
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5776, 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 5776 draws a D−. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is close to two hours behind schedule. Build slack into anything you connect to. That rests on 334 flights, with a median arrival 3 minutes late.
The national on-time rate over the same period is 77.3%, so OO 5776 runs 15 points behind the country as a whole. Across a thousand flights that is about 148 extra late arrivals.
Key figures
On time
62.5%
Arrivals under 15 minutes late, of 315 completed flights
Avg delay
100 min
Across delayed arrivals only, not all flights
Cancelled
5.69%
National rate is 1.89%
1 hour+ late
21.0%
National rate is 8.3%
These figures cover 334 flights between September 2025 and August 2026. Beyond the headline rate, 21.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5776 flies
OO 5776 flies ASE to DEN without a single fixed slot. Its most common scheduled departure was 15:25, used on 164 of 334 flights, with 15:29 (70 flights) and 15:34 (36 flights) next.
- Departs 15:25164 flights49.1%
- Departs 15:2970 flights21.0%
- Departs 15:3436 flights10.8%
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 15:25 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and OO 5776 runs 9 points worse at 62.5%. 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 5776 next to ASE to DEN
Every carrier on ASE to DEN combined arrived on time 76.7% of the time across 2,742 flights, so OO 5776 is 14 points behind it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 16 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5776thin sample | 334 | 62.5% | 100 min | 5.69% | D− |
| All SkyWest Airlines on ASE–DEN | 2,742 | 76.7% | 106 min | 4.96% | B− |
| All carriers on ASE–DEN | 2,742 | 76.7% | 106 min | 4.96% | B− |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5776 quarter by quarter
OO 5776 did not run the same all year. Its best quarter was Jan–Mar 2026 at 76.5% on time and its weakest Jul–Sep 2025 at 43.3%, a swing of 33 points on roughly 67 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 flights43.3%
- Oct–Dec 202591 flights69.8%
- Jan–Mar 202690 flights76.5%
- Apr–Jun 202662 flights54.1%
- Jul–Sep 202661 flights50.9%
Scale runs 35% to 80%.
By weekday, OO 5776 did best on Tuesday at 69.6% on time and worst on Saturday at 51.2%. Each day rests on about 48 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5776 runs when it is late
OO 5776 often beats the schedule: 80 of 315 completed flights, 25%, arrived 15 minutes or more early. When OO 5776 is late it tends to be very late: 66 of its 118 late arrivals were an hour or more behind, and 38 were two hours or more.
- 15+ min early80 flights25.4%
- Within 15 min117 flights37.1%
- 15–29 min late29 flights9.2%
- 30–59 min late23 flights7.3%
- 1–2 hours late28 flights8.9%
- 2+ hours late38 flights12.1%
Scale runs 0% to 100%.
Share of 315 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 109 departures that left 15 minutes late or more, only 12 made it up before arrival. 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 DEN.
The worst days
Worst days for OO 5776
The latest arrival of the period was on 26 July 2026, 17 hours 13 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across July, December, February and June, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 July 2026 | 17 hours 13 minutes | Late-arriving aircraft |
| 19 December 2025 | 5 hours 18 minutes | National Airspace System |
| 19 July 2026 | 5 hours 9 minutes | Carrier |
| 20 February 2026 | 4 hours 35 minutes | Extreme weather |
| 30 June 2026 | 4 hours 23 minutes | Carrier |
Delay causes
Why OO 5776 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 12,000 reported delay minutes.
- 31%National Airspace System
- 31%Late-arriving aircraft
- 21%Extreme weather
- 17%Carrier
Extreme weather accounts for 21% 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 3.5 times the usual weather exposure. The split is drawn from 11,798 delay minutes reported on OO 5776.
Cancellations run at 5.69%, against 1.89% nationally. That is roughly one flight in twenty 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
21.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The same number turns up on two other city pairs in the data, including ROA to ORD (9) and CVG to ORD (1), but none flew often enough under OO 5776 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ASE to DEN only.
One caution: this is a thin sample. 334 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 5776
For a booking, the cancellation rate is the figure to plan around on OO 5776: 5.69% of its 334 scheduled flights did not operate. A late arrival costs close to two hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- ASE to DEN, every carrier and departure
- DEN to ASE, the return direction
- SkyWest Airlines 5766 on the same route90.1%
- SkyWest Airlines 5774 on the same route76.9%
- SkyWest Airlines 5778 on the same route70.1%
- SkyWest Airlines 5772 on the same route76.7%
- 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
- How often a connection fails at the major US hubs
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.