Flight number record

OO 5766

SkyWest Airlines · Aspen to Denver

Route: ASE → DEN
Departs: 07:00
Flights: 337
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5766, 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 5766 lands a B−, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 337 flights, with a median arrival 16 minutes early.

Set against the rest of the country, OO 5766's record is 6 points better than the US average of 77.6%. That gap is worth roughly 56 fewer late arrivals for every thousand flights.

On time

83.2%

Arrivals under 15 minutes late, of 322 completed flights

Avg delay

83 min

Across delayed arrivals only, not all flights

Cancelled

4.45%

National rate is 1.81%

1 hour+ late

7.5%

National rate is 8.1%

These figures cover 337 flights between July 2025 and June 2026. The median arrival is 16 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.

Schedule

When OO 5766 flies

OO 5766 flies ASE to DEN without a single fixed slot. Its most common scheduled departure was 07:00, used on 107 of 337 flights, with 07:30 (71 flights) and 07:35 (56 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:00107 flights31.8%
Departs 07:3071 flights21.1%
Departs 07:3556 flights16.6%

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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 5766 runs 6 points worse at 83.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

OO 5766 next to ASE to DEN

Every carrier on ASE to DEN combined arrived on time 75.2% of the time across 2,716 flights, so OO 5766 is 8 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 4 points.

OO 5766 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5766thin sample	337	83.2%	83 min	4.45%	B−
All SkyWest Airlines on ASE–DEN	2,716	75.2%	102 min	5.15%	B−
All carriers on ASE–DEN	2,716	75.2%	102 min	5.15%	B−
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5766 quarter by quarter

OO 5766 did not run the same all year. Its best quarter was Apr–Jun 2026 at 95.1% on time and its weakest Jul–Sep 2025 at 68.5%, a swing of 27 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 202592 flights68.5%
Oct–Dec 202592 flights84.4%
Jan–Mar 202690 flights89.0%
Apr–Jun 202663 flights95.1%

Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5766 ranged from 77.8% on Monday to 89.1% on Friday. With about 48 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 5766 runs late

One category carries most of the weight here. Carrier accounts for 61% of the 4,473 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.

Carrier
61%
National Airspace System
16%
Extreme weather
16%
Late-arriving aircraft
6%

Extreme weather accounts for 16% 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 2.5 times the usual weather exposure. The split is drawn from 4,473 delay minutes reported on OO 5766.

Cancellations run at 4.45%, against 1.81% 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

7.5% 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 an hour and a half, which a normal layover absorbs.

The same number turns up on one other city pair in the data, including SFO to SEA (3), but none flew often enough under OO 5766 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. 337 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 5766

For a booking, the cancellation rate is the figure to plan around on OO 5766: 4.45% of its 337 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.

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