Flight number record

OO 4681

SkyWest Airlines · Denver to Lexington

Route: DEN → LEX
Departs: 17:28
Flights: 323
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4681, 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 4681 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 323 flights, with a median arrival 7 minutes early.

On time

74.8%

Arrivals under 15 minutes late, of 321 completed flights

Avg delay

64 min

Across delayed arrivals only, not all flights

Cancelled

0.62%

National rate is 1.81%

1 hour+ late

9.3%

National rate is 8.1%

These figures cover 323 flights between July 2025 and June 2026. Beyond the headline rate, 9.3% 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 4681 flies

OO 4681 flies DEN to LEX without a single fixed slot. Its most common scheduled departure was 17:28, used on 58 of 323 flights, with 17:20 (49 flights) and 17:25 (40 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 17:2858 flights18.0%
Departs 17:2049 flights15.2%
Departs 17:2540 flights12.4%

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 17:28 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and OO 4681 runs 7 points better at 74.8%. 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 4681 next to DEN to LEX

Every carrier on DEN to LEX combined arrived on time 71.1% of the time across 365 flights, so OO 4681 is 4 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 4 points.

OO 4681 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4681thin sample	323	74.8%	64 min	0.62%	C+
All SkyWest Airlines on DEN–LEXthin sample	324	74.8%	64 min	0.62%	C+
All carriers on DEN–LEX	365	71.1%	66 min	0.55%	C+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4681 quarter by quarter

OO 4681 did not run the same all year. Its best quarter was Apr–Jun 2026 at 88.0% on time and its weakest Jul–Sep 2025 at 58.7%, a swing of 29 points on roughly 81 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 flights58.7%
Oct–Dec 202591 flights81.3%
Jan–Mar 202690 flights77.3%
Apr–Jun 202650 flights88.0%

Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4681 did best on Tuesday at 80.9% on time and worst on Monday at 65.2%. Each day rests on about 46 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4681 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 5,172 reported delay minutes.

Carrier
31%
National Airspace System
27%
Late-arriving aircraft
27%
Extreme weather
15%

Extreme weather accounts for 15% 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 5,172 delay minutes reported on OO 4681.

Cancellations are rare at 0.62%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

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. 9.3% 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 1,086 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The same number turns up on four other city pairs in the data, including IAH to BNA (24), ORD to SDF (10) and GRB to ORD (6), but none flew often enough under OO 4681 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to LEX only.

One caution: this is a thin sample. 323 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 4681

For a booking, read OO 4681 as 74.8% on time with 0.62% cancelled over 323 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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