ON TIMEBOARD

UA 5866 on time

United Airlines 5866: Lincoln to Denver at 6:00 a.m. (past 12 months)

On time
91%
329 flights · likely 87–93%
Cancelled
0.0%
of scheduled flights
Typical arrival
−19 min
median vs schedule
When late
+175 min
average delay
Similar flights
89%
UA, same route & hour

About 1 in 11 UA 5866 flights from Lincoln arrived 15+ minutes late, diverted or cancelled over the past year (9%); 0.0% were cancelled. The typical flight landed 19 minutes early.

UA 5866: LNK → DEN

Scheduled to leave Lincoln at 6:00 a.m. local time, operated by SkyWest as OO 5866. Over the past year it arrived on time 91% of the time (329 flights), in line with other UA flights on the route at that hour (89%). Last seen in the data Aug 10, 2026.

Month by month

40%70%100%Sep 2025: 93% on time (30 flights)93SepOct 2025: 100% on time (31 flights)100OctNov 2025: 93% on time (29 flights)93NovDec 2025: 90% on time (31 flights)90DecJan 2026: 87% on time (31 flights)87JanFeb 2026: 93% on time (27 flights)93FebMar 2026: 74% on time (31 flights)74MarApr 2026: 90% on time (30 flights)90AprMay 2026: 93% on time (28 flights)93MayJun 2026: 85% on time (26 flights)85JunJul 2026: 96% on time (27 flights)96JulAug 2026: too few flights (8 flights)Aug

By day of week

DayFlightsOn time
Monday5094%
Tuesday4990%
Wednesday4894%
Thursday4984%
Friday4890%
Saturday3789%
Sunday4894%

Why it was late

Airline (crew, maintenance, ops) 61%Severe weather 20%Late inbound plane 12%Air traffic & airport (NAS) 7%

All flights LNK → DEN · Connecting off UA 5866? Check the risk

Questions

How often is UA 5866 from LNK to DEN late?

United Airlines 5866 from Lincoln, NE to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 9% of 329 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.