Flight number record
OO 5779
SkyWest Airlines · Denver to Aspen
- Route
- DEN → ASE
- Departs
- 19:10
- Flights
- 335
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5779, 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 5779 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.3%. The late ones land close to two hours behind schedule. That rests on 335 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.3%, so OO 5779 runs 8 points behind the country as a whole. Across a thousand flights that is about 78 extra late arrivals.
Key figures
On time
69.5%
Arrivals under 15 minutes late, of 315 completed flights
Avg delay
105 min
Across delayed arrivals only, not all flights
Cancelled
4.78%
National rate is 1.89%
1 hour+ late
15.6%
National rate is 8.3%
These figures cover 335 flights between September 2025 and August 2026. Beyond the headline rate, 15.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5779 flies
OO 5779 flies DEN to ASE without a single fixed slot. Its most common scheduled departure was 19:10, used on 140 of 335 flights, with 19:05 (87 flights) next.
- Departs 19:10140 flights41.8%
- Departs 19:0587 flights26.0%
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 19:10 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OO 5779 runs level with that at 69.5%. 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 5779 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 5779 is 5 points behind it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5779thin sample | 335 | 69.5% | 105 min | 4.78% | C− |
| 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 5779 quarter by quarter
OO 5779 did not run the same all year. Its best quarter was Jan–Mar 2026 at 85.0% on time and its weakest Jul–Sep 2026 at 43.6%, a swing of 41 points on roughly 84 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 flights—
- Oct–Dec 202591 flights78.7%
- Jan–Mar 202690 flights85.0%
- Apr–Jun 202663 flights53.2%
- Jul–Sep 202661 flights43.6%
Scale runs 35% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5779 ranged from 65.2% on Saturday to 75.0% on Wednesday. With about 48 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 5779 runs when it is late
When OO 5779 is late it tends to be very late: 49 of its 96 late arrivals were an hour or more behind, and 16 were two hours or more.
- 15+ min early54 flights17.1%
- Within 15 min165 flights52.4%
- 15–29 min late23 flights7.3%
- 30–59 min late24 flights7.6%
- 1–2 hours late33 flights10.5%
- 2+ hours late16 flights5.1%
Scale runs 0% to 100%.
Share of 315 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 88 departures that left 15 minutes late or more, only 9 made it up before arrival. In the other direction, 17 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 ASE.
The worst days
Worst days for OO 5779
The latest arrival of the period was on 20 February 2026, 14 hours 39 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across February, August, April and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 20 February 2026 | 14 hours 39 minutes | Carrier |
| 23 August 2026 | 14 hours 4 minutes | National Airspace System |
| 1 April 2026 | 13 hours 52 minutes | Extreme weather |
| 18 February 2026 | 13 hours 9 minutes | Late-arriving aircraft |
| 25 July 2026 | 12 hours 1 minute | Extreme weather |
Delay causes
Why OO 5779 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 10,000 reported delay minutes.
- 29%National Airspace System
- 28%Extreme weather
- 25%Late-arriving aircraft
- 18%Carrier
Extreme weather accounts for 28% 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 4.7 times the usual weather exposure. The split is drawn from 10,046 delay minutes reported on OO 5779.
Cancellations run at 4.78%, against 1.89% nationally. That is about 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
15.6% 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 one other city pair in the data, including RAP to ORD (21), but none flew often enough under OO 5779 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. 335 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 5779
For a booking, the cancellation rate is the figure to plan around on OO 5779: 4.78% of its 335 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
- 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 5775 on the same route72.3%
- SkyWest Airlines 5773 on the same route77.4%
- SkyWest Airlines 5782 on the same route78.5%
- SkyWest Airlines 5781 on the same route77.4%
- 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.