Flight number record

OO 5776

SkyWest Airlines · Aspen to Denver

Route: ASE → DEN
Departs: 15:25
Flights: 335
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 an hour and a half behind schedule. Build slack into anything you connect to. That rests on 335 flights, with a median arrival 5 minutes late.

The national on-time rate over the same period is 77.6%, so OO 5776 runs 18 points behind the country as a whole. Across a thousand flights that is about 176 extra late arrivals.

On time

60.0%

Arrivals under 15 minutes late, of 315 completed flights

Avg delay

90 min

Across delayed arrivals only, not all flights

Cancelled

5.97%

National rate is 1.81%

1 hour+ late

22.2%

National rate is 8.1%

These figures cover 335 flights between July 2025 and June 2026. Beyond the headline rate, 22.2% 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 5776 flies

OO 5776 flies ASE to DEN without a single fixed slot. Its most common scheduled departure was 15:25, used on 137 of 335 flights, with 15:29 (70 flights) and 15:23 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:25137 flights40.9%
Departs 15:2970 flights20.9%
Departs 15:2349 flights14.6%

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 15:25 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and OO 5776 runs 12 points worse at 60.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 5776 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 5776 is 15 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 19 points.

OO 5776 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5776thin sample	335	60.0%	90 min	5.97%	D−
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 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 39.1%, a swing of 37 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 flights39.1%
Oct–Dec 202591 flights69.8%
Jan–Mar 202690 flights76.5%
Apr–Jun 202662 flights54.1%

Scale runs 30% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5776 did best on Thursday at 68.2% on time and worst on Saturday at 50.0%. Each day rests on about 48 flights, so a gap of 18 points is worth noticing but could still narrow in another year.

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 11,000 reported delay minutes.

National Airspace System
38%
Late-arriving aircraft
25%
Extreme weather
23%
Carrier
13%

Extreme weather accounts for 23% 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 3.7 times the usual weather exposure. The split is drawn from 11,309 delay minutes reported on OO 5776.

Cancellations run at 5.97%, against 1.81% nationally. That is roughly 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 22.2% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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. 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 5776

For a booking, the cancellation rate is the figure to plan around on OO 5776: 5.97% of its 335 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