ON TIMEBOARD

UA 235 on time

United Airlines 235: Atlanta to Denver at 4:35 p.m. (past 12 months)

On time
77%
363 flights · likely 73–81%
Cancelled
0.3%
of scheduled flights
Typical arrival
−6 min
median vs schedule
When late
+86 min
average delay
Similar flights
78%
UA, same route & hour

About 1 in 4 UA 235 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (23%); 0.3% were cancelled. The typical flight landed 6 minutes early.

UA 235: ATL → DEN

Scheduled to leave Atlanta at 4:35 p.m. local time. Over the past year it arrived on time 77% of the time (363 flights), in line with other UA flights on the route at that hour (78%). Last seen in the data Aug 31, 2026.

Usually United Airlines's last flight of the day from Atlanta to Denver (100% of days). United Airlines's last ATL–DEN flight was cancelled 0.3% of the time, against 0.5% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 7:30 a.m. the next morning.

Month by month

40%70%100%Sep 2025: 73% on time (30 flights)73SepOct 2025: 84% on time (31 flights)84OctNov 2025: 90% on time (29 flights)90NovDec 2025: 71% on time (31 flights)71DecJan 2026: 94% on time (31 flights)94JanFeb 2026: 93% on time (28 flights)93FebMar 2026: 81% on time (31 flights)81MarApr 2026: 93% on time (30 flights)93AprMay 2026: 71% on time (31 flights)71MayJun 2026: 77% on time (30 flights)77JunJul 2026: 50% on time (30 flights)50JulAug 2026: 55% on time (31 flights)55Aug

By day of week

DayFlightsOn time
Monday5374%
Tuesday5288%
Wednesday5288%
Thursday5176%
Friday5273%
Saturday5169%
Sunday5273%

Why it was late

Late inbound plane 47%Air traffic & airport (NAS) 35%Airline (crew, maintenance, ops) 16%Severe weather 2%

All flights ATL → DEN · Connecting off UA 235? Check the risk

Questions

How often is UA 235 from ATL to DEN late?

United Airlines 235 from Atlanta, GA to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 23% of 363 scheduled flights between September 2025 and August 2026. 0.3% 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.