Flight number record

OO 5773

SkyWest Airlines · Denver to Aspen

Route: DEN → ASE
Departs: 15:55
Flights: 306
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 306 flights, with a median arrival 8 minutes early.

On time

77.1%

Arrivals under 15 minutes late, of 279 completed flights

Avg delay

76 min

Across delayed arrivals only, not all flights

Cancelled

7.52%

National rate is 1.81%

1 hour+ late

11.1%

National rate is 8.1%

These figures cover 306 flights between July 2025 and June 2026. Beyond the headline rate, 11.1% 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 5773 flies

OO 5773 flies DEN to ASE without a single fixed slot. Its most common scheduled departure was 15:55, used on 117 of 306 flights, with 15:35 (114 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:55117 flights38.2%
Departs 15:35114 flights37.3%

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 15:55 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and OO 5773 runs 5 points better at 77.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 5773 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 5773 is 2 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 2 points.

OO 5773 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5773thin sample	306	77.1%	76 min	7.52%	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 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 2025 at 64.6%, a swing of 20 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 202592 flights64.6%
Oct–Dec 202591 flights79.3%
Jan–Mar 202690 flights84.4%
Apr–Jun 202633 flights84.8%

Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5773 did best on Tuesday at 85.7% on time and worst on Friday at 64.9%. Each day rests on about 44 flights, so a gap of 21 points is worth noticing but could still narrow in another year.

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 4,885 reported delay minutes.

National Airspace System
27%
Carrier
25%
Late-arriving aircraft
25%
Extreme weather
23%

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 4,885 delay minutes reported on OO 5773.

Cancellations run at 7.52%, against 1.81% nationally. That is roughly one flight in twelve 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. 11.1% 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 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: 7.52% of its 306 scheduled flights did not operate. A late arrival costs a little over an hour, 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