Flight number record

OO 5781

SkyWest Airlines · Denver to Aspen

Route: DEN → ASE
Departs: 20:20
Flights: 285
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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−, about a point worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by about 3.2 hours on average. That is a workable record, not a spotless one. That rests on 285 flights, with a median arrival 8 minutes early.

On time

76.7%

Arrivals under 15 minutes late, of 262 completed flights

Avg delay

192 min

Across delayed arrivals only, not all flights

Cancelled

7.02%

National rate is 1.81%

1 hour+ late

8.4%

National rate is 8.1%

These figures cover 285 flights between July 2025 and June 2026. Beyond the headline rate, 8.4% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When OO 5781 flies

OO 5781 flies DEN to ASE without a single fixed slot. Its most common scheduled departure was 20:20, used on 95 of 285 flights, with 20:25 (53 flights) and 20:49 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:2095 flights33.3%
Departs 20:2553 flights18.6%
Departs 20:4937 flights13.0%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 20:20 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and OO 5781 runs 6 points better at 76.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 5781 next to DEN to ASE

Every carrier on DEN to ASE combined arrived on time 74.8% of the time across 2,715 flights, so OO 5781 is 2 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 2 points.

OO 5781 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5781thin sample	285	76.7%	192 min	7.02%	B−
All SkyWest Airlines on DEN–ASE	2,715	74.8%	96 min	5.23%	C−
All carriers on DEN–ASE	2,715	74.8%	96 min	5.23%	C−
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	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 2025 at 65.5%, a swing of 22 points on roughly 71 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 202590 flights65.5%
Oct–Dec 202549 flights80.9%
Jan–Mar 202690 flights87.5%
Apr–Jun 202656 flights74.5%

Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5781 did best on Saturday at 90.0% on time and worst on Thursday at 68.4%. Each day rests on about 41 flights, so a gap of 22 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5781 runs late

One category carries most of the weight here. National Airspace System accounts for 53% of the 12,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

National Airspace System
53%
Carrier
22%
Extreme weather
14%
Late-arriving aircraft
11%

Extreme weather accounts for 14% 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 2.3 times the usual weather exposure. The split is drawn from 11,738 delay minutes reported on OO 5781.

Cancellations run at 7.02%, against 1.81% 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

8.4% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 3.2 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. 285 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: 7.02% of its 285 scheduled flights did not operate. A late arrival costs about 3.2 hours, but a cancellation costs the day, so leave a later option open.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures