ON TIMEBOARD

UA 5039 on time

United Airlines 5039: Denver to North Platte at 4:20 p.m. (past 12 months)

On time
59%
163 flights · likely 51–66%
Cancelled
1.8%
of scheduled flights
Typical arrival
+2 min
median vs schedule
When late
+117 min
average delay
Similar flights
64%
UA, same route & hour

About 1 in 2 UA 5039 flights from Denver arrived 15+ minutes late, diverted or cancelled over the past year (41%); 1.8% were cancelled. The typical flight landed 2 minutes late.

UA 5039: DEN → LBF

Scheduled to leave Denver at 4:20 p.m. local time, operated by SkyWest as OO 5039. Over the past year it arrived on time 59% of the time (163 flights), worse than other UA flights on the route at that hour (64%). Last seen in the data Aug 31, 2026.

Month by month

30%65%100%Apr 2025: 60% on time (20 flights)60AprMay 2025: 87% on time (15 flights)87MayAug 2025: 57% on time (23 flights)57AugSep 2025: 88% on time (16 flights)88SepDec 2025: 41% on time (22 flights)41DecJan 2026: too few flights (5 flights)JanMar 2026: 67% on time (18 flights)67MarApr 2026: too few flights (1 flights)AprMay 2026: 65% on time (23 flights)65MayJun 2026: 55% on time (22 flights)55JunJul 2026: 61% on time (31 flights)61JulAug 2026: 44% on time (25 flights)44Aug

By day of week

DayFlightsOn time
Monday3067%
Tuesday8—
Wednesday7—
Thursday2952%
Friday3060%
Saturday3057%
Sunday2962%

Why it was late

Late inbound plane 38%Airline (crew, maintenance, ops) 32%Severe weather 16%Air traffic & airport (NAS) 15%

All flights DEN → LBF · Connecting off UA 5039? Check the risk

Questions

How often is UA 5039 from DEN to LBF late?

United Airlines 5039 from Denver, CO to North Platte, NE arrived 15 or more minutes late, was diverted or was cancelled on 41% of 163 scheduled flights between September 2025 and August 2026. 1.8% 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.