ON TIMEBOARD

UA 2383 on time

United Airlines 2383: Raleigh to Denver at 8:30 a.m.; Denver to Idaho Falls at 11:45 a.m. (past 12 months). Figures below the title are for RDU → DEN, its busiest leg

On time
91%
124 flights · likely 85–95%
Cancelled
0.0%
of scheduled flights
Typical arrival
−5 min
median vs schedule
When late
+74 min
average delay
Similar flights
92%
UA, same route & hour

About 1 in 11 UA 2383 flights from Raleigh arrived 15+ minutes late, diverted or cancelled over the past year (9%); 0.0% were cancelled. The typical flight landed 5 minutes early.

UA 2383: RDU → DEN

Scheduled to leave Raleigh at 8:30 a.m. local time. Over the past year it arrived on time 91% of the time (124 flights), in line with other UA flights on the route at that hour (92%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Apr 2026: too few flights (1 flights)AprMay 2026: 94% on time (31 flights)94MayJun 2026: 93% on time (30 flights)93JunJul 2026: 87% on time (31 flights)87JulAug 2026: 94% on time (31 flights)94Aug

By day of week

DayFlightsOn time
Monday18—
Tuesday17—
Wednesday17—
Thursday18—
Friday18—
Saturday18—
Sunday18—

Why it was late

Airline (crew, maintenance, ops) 93%Air traffic & airport (NAS) 7%

All flights RDU → DEN · Connecting off UA 2383? Check the risk

UA 2383: DEN → IDA

Scheduled to leave Denver at 11:45 a.m. local time. Over the past year it arrived on time 77% of the time (124 flights), worse than other UA flights on the route at that hour (84%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Apr 2026: too few flights (1 flights)AprMay 2026: 71% on time (31 flights)71MayJun 2026: 63% on time (30 flights)63JunJul 2026: 81% on time (31 flights)81JulAug 2026: 94% on time (31 flights)94Aug

By day of week

DayFlightsOn time
Monday18—
Tuesday17—
Wednesday17—
Thursday18—
Friday18—
Saturday18—
Sunday18—

Why it was late

Late inbound plane 82%Airline (crew, maintenance, ops) 14%Air traffic & airport (NAS) 5%

All flights DEN → IDA · Connecting off UA 2383? Check the risk

Questions

How often is UA 2383 from RDU to DEN late?

United Airlines 2383 from Raleigh/Durham, NC to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 9% of 124 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

How often is UA 2383 from DEN to IDA late?

United Airlines 2383 from Denver, CO to Idaho Falls, ID arrived 15 or more minutes late, was diverted or was cancelled on 23% of 124 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.