Flight number record
OO 5773
SkyWest Airlines · Denver to Aspen
- Route
- DEN → ASE
- Departs
- 15:35
- Flights
- 306
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5773, 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 5773 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 an hour and a half on average. That rests on 306 flights, with a median arrival 9 minutes early.
Key figures
On time
77.4%
Arrivals under 15 minutes late, of 279 completed flights
Avg delay
91 min
Across delayed arrivals only, not all flights
Cancelled
6.54%
National rate is 1.89%
1 hour+ late
11.5%
National rate is 8.3%
These figures cover 306 flights between September 2025 and August 2026. Beyond the headline rate, 11.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5773 flies
OO 5773 flies DEN to ASE without a single fixed slot. Its most common scheduled departure was 15:35, used on 114 of 306 flights, with 15:55 (55 flights) and 15:07 (40 flights) next.
- Departs 15:35114 flights37.3%
- Departs 15:5555 flights18.0%
- Departs 15:0740 flights13.1%
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 15:35 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and OO 5773 runs 6 points better at 77.4%. 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 5773 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 5773 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 5773thin sample | 306 | 77.4% | 91 min | 6.54% | 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 5773 quarter by quarter
OO 5773 did not run the same all year. Its best quarter was Apr–Jun 2026 at 84.8% on time and its weakest Jul–Sep 2026 at 58.5%, a swing of 26 points on roughly 77 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 flights79.3%
- Jan–Mar 202690 flights84.4%
- Apr–Jun 202633 flights84.8%
- Jul–Sep 202662 flights58.5%
Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5773 did best on Tuesday at 92.3% on time and worst on Saturday at 65.1%. Each day rests on about 44 flights, so a gap of 27 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5773 runs when it is late
OO 5773 often beats the schedule: 93 of 279 completed flights, 33%, arrived 15 minutes or more early. When OO 5773 is late it tends to be very late: 32 of its 63 late arrivals were an hour or more behind, and 16 were two hours or more.
- 15+ min early93 flights33.3%
- Within 15 min123 flights44.1%
- 15–29 min late15 flights5.4%
- 30–59 min late16 flights5.7%
- 1–2 hours late16 flights5.7%
- 2+ hours late16 flights5.7%
Scale runs 0% to 100%.
Share of 279 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 57 departures that left 15 minutes late or more, only 6 made it up before arrival. 12 flights left on time and still arrived late.
The worst days
Worst days for OO 5773
The latest arrival of the period was on 4 July 2026, 16 hours 5 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 4 July 2026 | 16 hours 5 minutes | Late-arriving aircraft |
| 28 December 2025 | 4 hours 10 minutes | Carrier |
| 30 November 2025 | 3 hours 49 minutes | Late-arriving aircraft |
| 4 January 2026 | 3 hours 16 minutes | Late-arriving aircraft |
| 20 December 2025 | 2 hours 45 minutes | National Airspace System |
Delay causes
Why OO 5773 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 5,752 reported delay minutes.
- 37%Late-arriving aircraft
- 24%National Airspace System
- 20%Carrier
- 19%Extreme weather
Extreme weather accounts for 19% 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 3.1 times the usual weather exposure. The split is drawn from 5,752 delay minutes reported on OO 5773.
Cancellations run at 6.54%, 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
11.5% 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 DEN to SLC (30) and ABE to ORD (21), but none flew often enough under OO 5773 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. 306 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 5773
For a booking, the cancellation rate is the figure to plan around on OO 5773: 6.54% of its 306 scheduled flights did not operate. A late arrival costs an hour and a half, 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 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
- Why the first flight of the morning is statistically safest
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.