Flight number record

OO 5866

SkyWest Airlines · Lincoln to Denver

Route: LNK → DEN
Departs: 06:00
Flights: 355
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5866, 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 5866 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 2.8 hours. That rests on 355 flights, with a median arrival 19 minutes early.

Set against the rest of the country, OO 5866's record is 12 points better than the US average of 77.6%. That gap is worth roughly 120 fewer late arrivals for every thousand flights.

On time

89.6%

Arrivals under 15 minutes late, of 355 completed flights

Avg delay

165 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

6.5%

National rate is 8.1%

These figures cover 355 flights between July 2025 and June 2026. The median arrival is 19 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 5866 flies

OO 5866 flies LNK to DEN without a single fixed slot. Its most common scheduled departure was 06:00, used on 148 of 355 flights, with 06:15 (106 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:00148 flights41.7%
Departs 06:15106 flights29.9%

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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 5866 runs level with that at 89.6%. 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 5866 next to LNK to DEN

Every carrier on LNK to DEN combined arrived on time 79.5% of the time across 1,594 flights, so OO 5866 is 10 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 11 points.

OO 5866 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5866thin sample	355	89.6%	165 min	0.00%	A+
All SkyWest Airlines on LNK–DEN	1,594	79.5%	98 min	1.00%	B
All carriers on LNK–DEN	1,594	79.5%	98 min	1.00%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5866 quarter by quarter

OO 5866 did not run the same all year. Its best quarter was Oct–Dec 2025 at 94.5% on time and its weakest Jan–Mar 2026 at 84.3%, a swing of 10 points on roughly 89 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 202591 flights90.1%
Oct–Dec 202591 flights94.5%
Jan–Mar 202689 flights84.3%
Apr–Jun 202684 flights89.3%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5866 did best on Monday at 94.2% on time and worst on Thursday at 80.8%. Each day rests on about 51 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5866 runs late

One category carries most of the weight here. Carrier accounts for 61% of the 6,118 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%
Extreme weather
18%
Late-arriving aircraft
11%
National Airspace System
10%

Extreme weather accounts for 18% 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 2.9 times the usual weather exposure. The split is drawn from 6,118 delay minutes reported on OO 5866.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

6.5% 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 about 2.8 hours, which a normal layover absorbs.

Every one of the 355 flights under OO 5866 in the data flew LNK to DEN. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 355 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 5866

For a booking, OO 5866 has one of the better records a US domestic flight can show: 89.6% on time and 0.00% cancelled. That is a base rate, not a promise about any single 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