ON TIMEBOARD
United Airlines / DEN → ORD

UA 2258 on time

United Airlines 2258: Denver to Chicago at 7:10 p.m.; Bozeman to Denver at 2:26 p.m. (past 12 months). Figures below the title are for DEN → ORD, its busiest leg

On time
69%
274 flights · likely 63–74%
Cancelled
2.9%
of scheduled flights
Typical arrival
−5 min
median vs schedule
When late
+92 min
average delay
Similar flights
67%
UA, same route & hour

About 1 in 3 UA 2258 flights from Denver arrived 15+ minutes late, diverted or cancelled over the past year (31%); 2.9% were cancelled. The typical flight landed 5 minutes early.

UA 2258: DEN → ORD

Scheduled to leave Denver at 7:10 p.m. local time. Over the past year it arrived on time 69% of the time (274 flights), in line with other UA flights on the route at that hour (67%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 85% on time (26 flights)85SepOct 2025: 77% on time (26 flights)77OctNov 2025: 73% on time (26 flights)73NovDec 2025: too few flights (13 flights)DecJan 2026: too few flights (5 flights)JanFeb 2026: too few flights (14 flights)FebMar 2026: 63% on time (27 flights)63MarApr 2026: 76% on time (21 flights)76AprMay 2026: 81% on time (31 flights)81MayJun 2026: 67% on time (30 flights)67JunJul 2026: 50% on time (26 flights)50JulAug 2026: 52% on time (29 flights)52Aug

By day of week

DayFlightsOn time
Monday4659%
Tuesday3574%
Wednesday3675%
Thursday4466%
Friday4473%
Saturday3073%
Sunday3964%

Why it was late

Late inbound plane 49%Air traffic & airport (NAS) 31%Airline (crew, maintenance, ops) 20%

All flights DEN → ORD · Connecting off UA 2258? Check the risk

UA 2258: BZN → DEN

Scheduled to leave Bozeman at 2:26 p.m. local time. Over the past year it arrived on time 76% of the time (180 flights), in line with other UA flights on the route at that hour (73%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Mar 2026: 70% on time (27 flights)70MarApr 2026: 93% on time (30 flights)93AprMay 2026: 81% on time (31 flights)81MayJun 2026: 83% on time (30 flights)83JunJul 2026: 68% on time (31 flights)68JulAug 2026: 58% on time (31 flights)58Aug

By day of week

DayFlightsOn time
Monday2662%
Tuesday2584%
Wednesday2564%
Thursday2681%
Friday2685%
Saturday2669%
Sunday2685%

Why it was late

Air traffic & airport (NAS) 59%Late inbound plane 24%Airline (crew, maintenance, ops) 17%

All flights BZN → DEN · Connecting off UA 2258? Check the risk

Questions

How often is UA 2258 from DEN to ORD late?

United Airlines 2258 from Denver, CO to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 31% of 274 scheduled flights between September 2025 and August 2026. 2.9% were cancelled.

How often is UA 2258 from BZN to DEN late?

United Airlines 2258 from Bozeman, MT to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 24% of 180 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.