ON TIMEBOARD

UA 533 on time

United Airlines 533: Chicago to Bozeman at 8:15 p.m. (past 12 months)

On time
54%
126 flights · likely 45–62%
Cancelled
2.4%
of scheduled flights
Typical arrival
+12 min
median vs schedule
When late
+92 min
average delay
Similar flights
57%
UA, same route & hour

About 1 in 2 UA 533 flights from Chicago arrived 15+ minutes late, diverted or cancelled over the past year (46%); 2.4% were cancelled. The typical flight landed 12 minutes late.

UA 533: ORD → BZN

Scheduled to leave Chicago at 8:15 p.m. local time. Over the past year it arrived on time 54% of the time (126 flights), in line with other UA flights on the route at that hour (57%). Last seen in the data Aug 10, 2026.

Usually United Airlines's last flight of the day from Chicago to Bozeman (100% of days). United Airlines's last ORD–BZN flight was cancelled 1.1% of the time, against 0.3% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 9:10 a.m. the next morning.

Month by month

30%65%100%Mar 2026: 42% on time (24 flights)42MarApr 2026: too few flights (1 flights)AprMay 2026: 74% on time (31 flights)74MayJun 2026: 60% on time (30 flights)60JunJul 2026: 43% on time (30 flights)43JulAug 2026: too few flights (10 flights)Aug

By day of week

DayFlightsOn time
Monday18—
Tuesday17—
Wednesday17—
Thursday19—
Friday19—
Saturday18—
Sunday18—

Why it was late

Late inbound plane 64%Air traffic & airport (NAS) 21%Airline (crew, maintenance, ops) 13%Severe weather 2%

All flights ORD → BZN · Connecting off UA 533? Check the risk

Questions

How often is UA 533 from ORD to BZN late?

United Airlines 533 from Chicago, IL to Bozeman, MT arrived 15 or more minutes late, was diverted or was cancelled on 46% of 126 scheduled flights between September 2025 and August 2026. 2.4% 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.