ON TIMEBOARD

UA 5077 on time

United Airlines 5077: Denver to Riverton at 12:15 p.m. (past 12 months)

On time
87%
202 flights · likely 81–91%
Cancelled
0.5%
of scheduled flights
Typical arrival
−10 min
median vs schedule
When late
+69 min
average delay
Similar flights
84%
UA, same route & hour

About 1 in 7 UA 5077 flights from Denver arrived 15+ minutes late, diverted or cancelled over the past year (13%); 0.5% were cancelled. The typical flight landed 10 minutes early.

UA 5077: DEN → RIW

Scheduled to leave Denver at 12:15 p.m. local time, operated by SkyWest as OO 5077. Over the past year it arrived on time 87% of the time (202 flights), in line with other UA flights on the route at that hour (84%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Mar 2025: too few flights (2 flights)MarApr 2025: 80% on time (30 flights)80AprAug 2025: too few flights (13 flights)AugSep 2025: 100% on time (30 flights)100SepOct 2025: 90% on time (31 flights)90OctNov 2025: 93% on time (30 flights)93NovDec 2025: too few flights (1 flights)DecJan 2026: 85% on time (26 flights)85JanFeb 2026: 81% on time (27 flights)81FebMar 2026: too few flights (7 flights)MarApr 2026: 83% on time (29 flights)83AprAug 2026: 76% on time (21 flights)76Aug

By day of week

DayFlightsOn time
Monday3090%
Tuesday3080%
Wednesday2986%
Thursday2882%
Friday2886%
Saturday2896%
Sunday2986%

Why it was late

Airline (crew, maintenance, ops) 52%Severe weather 24%Late inbound plane 22%Air traffic & airport (NAS) 2%

All flights DEN → RIW · Connecting off UA 5077? Check the risk

Questions

How often is UA 5077 from DEN to RIW late?

United Airlines 5077 from Denver, CO to Riverton/Lander, WY arrived 15 or more minutes late, was diverted or was cancelled on 13% of 202 scheduled flights between September 2025 and August 2026. 0.5% 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.