ON TIMEBOARD

UA 4529 on time

United Airlines 4529: Chicago to Springfield at 8:50 a.m. (past 12 months)

On time
73%
160 flights · likely 66–79%
Cancelled
0.6%
of scheduled flights
Typical arrival
−9 min
median vs schedule
When late
+106 min
average delay
Similar flights
73%
UA, same route & hour

About 1 in 4 UA 4529 flights from Chicago arrived 15+ minutes late, diverted or cancelled over the past year (27%); 0.6% were cancelled. The typical flight landed 9 minutes early.

UA 4529: ORD → SGF

Scheduled to leave Chicago at 8:50 a.m. local time, operated by GoJet as G7 4529. Over the past year it arrived on time 73% of the time (160 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%Apr 2025: 83% on time (30 flights)83AprMay 2025: 88% on time (24 flights)88MayJun 2025: too few flights (12 flights)JunJul 2025: 74% on time (31 flights)74JulAug 2025: 78% on time (18 flights)78AugDec 2025: 66% on time (29 flights)66DecJan 2026: too few flights (4 flights)JanMar 2026: 50% on time (24 flights)50MarMay 2026: too few flights (11 flights)MayJun 2026: 73% on time (30 flights)73JunJul 2026: 87% on time (31 flights)87JulAug 2026: 77% on time (31 flights)77Aug

By day of week

DayFlightsOn time
Monday2387%
Tuesday2268%
Wednesday2277%
Thursday2268%
Friday2463%
Saturday2483%
Sunday2365%

Why it was late

Late inbound plane 69%Airline (crew, maintenance, ops) 17%Air traffic & airport (NAS) 12%Severe weather 2%

All flights ORD → SGF · Connecting off UA 4529? Check the risk

Questions

How often is UA 4529 from ORD to SGF late?

United Airlines 4529 from Chicago, IL to Springfield, MO arrived 15 or more minutes late, was diverted or was cancelled on 27% of 160 scheduled flights between September 2025 and August 2026. 0.6% 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.