Flight number record
OO 5866
SkyWest Airlines · Lincoln to Denver
- Route
- LNK → DEN
- Departs
- 06:00
- Flights
- 329
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 2.9 hours. That rests on 329 flights, with a median arrival 19 minutes early.
Set against the rest of the country, OO 5866's record is 13 points better than the US average of 77.3%. That gap is worth roughly 133 fewer late arrivals for every thousand flights.
Key figures
On time
90.6%
Arrivals under 15 minutes late, of 329 completed flights
Avg delay
175 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
6.1%
National rate is 8.3%
These figures cover 329 flights between September 2025 and August 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 329 flights, with 06:10 (69 flights) and 06:15 (45 flights) next.
- Departs 06:00148 flights45.0%
- Departs 06:1069 flights21.0%
- Departs 06:1545 flights13.7%
Scale runs 0% to 100%.
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 90.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
OO 5866 next to LNK to DEN
Every carrier on LNK to DEN combined arrived on time 80.1% of the time across 1,588 flights, so OO 5866 is 11 points ahead of it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5866thin sample | 329 | 90.6% | 175 min | 0.00% | A+ |
| All SkyWest Airlines on LNK–DEN | 1,588 | 80.1% | 107 min | 0.94% | B+ |
| All carriers on LNK–DEN | 1,588 | 80.1% | 107 min | 0.94% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5866 quarter by quarter
OO 5866 did not run the same all year. Its best quarter was Jul–Sep 2026 at 97.1% on time and its weakest Jan–Mar 2026 at 84.3%, a swing of 13 points on roughly 66 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 202530 flights93.3%
- Oct–Dec 202591 flights94.5%
- Jan–Mar 202689 flights84.3%
- Apr–Jun 202684 flights89.3%
- Jul–Sep 202635 flights97.1%
Scale runs 75% to 100%.
By weekday, OO 5866 ranged from 83.7% on Thursday to 94.0% on Monday. With about 47 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 5866 runs when it is late
OO 5866 often beats the schedule: 198 of 329 completed flights, 60%, arrived 15 minutes or more early. When OO 5866 is late it tends to be very late: 20 of its 31 late arrivals were an hour or more behind, and 14 were two hours or more.
- 15+ min early198 flights60.2%
- Within 15 min100 flights30.4%
- 15–29 min late6 flights1.8%
- 30–59 min late5 flights1.5%
- 1–2 hours late6 flights1.8%
- 2+ hours late14 flights4.3%
Scale runs 0% to 100%.
Share of 329 completed flights by arrival against schedule.
8 of 34 late departures made up the time and arrived on time, 24% of them. Only 5 left on time and still arrived late.
The worst days
Worst days for OO 5866
The latest arrival of the period was on 1 February 2026, 11 hours 5 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in March 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 February 2026 | 11 hours 5 minutes | Carrier |
| 17 March 2026 | 7 hours 46 minutes | Carrier |
| 2 April 2026 | 7 hours 24 minutes | Extreme weather |
| 7 March 2026 | 6 hours 53 minutes | Carrier |
| 18 March 2026 | 6 hours 9 minutes | Carrier |
Delay causes
Why OO 5866 runs late
Carrier accounts for 61% of the 5,424 delay minutes carriers reported here, and the remaining four split what is left.
- 61%Carrier
- 20%Extreme weather
- 12%Late-arriving aircraft
- 7%National Airspace System
Extreme weather accounts for 20% 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 3.3 times the usual weather exposure. The split is drawn from 5,424 delay minutes reported on OO 5866.
Cancellations are rare at 0.00%, below the national 1.89% 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
6.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 2.9 hours, which a normal layover absorbs.
The same number turns up on one other city pair in the data, including DEN to BIL (16), but none flew often enough under OO 5866 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LNK to DEN only.
One caution: this is a thin sample. 329 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: 90.6% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- LNK to DEN, every carrier and departure
- DEN to LNK, the return direction
- SkyWest Airlines 5431 on the same route66.3%
- SkyWest Airlines 5649 on the same route85.6%
- SkyWest Airlines 5348 on the same route77.8%
- Denver International (DEN) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.