ON TIMEBOARD

UA 4166 on time

United Airlines 4166: Allentown to Chicago at 6:15 a.m. (past 12 months)

On time
84%
305 flights · likely 80–88%
Cancelled
2.3%
of scheduled flights
Typical arrival
−12 min
median vs schedule
When late
+115 min
average delay
Similar flights
82%
UA, same route & hour

About 1 in 6 UA 4166 flights from Allentown arrived 15+ minutes late, diverted or cancelled over the past year (16%); 2.3% were cancelled. The typical flight landed 12 minutes early.

UA 4166: ABE → ORD

Scheduled to leave Allentown at 6:15 a.m. local time, operated by GoJet as G7 4166. Over the past year it arrived on time 84% of the time (305 flights), in line with other UA flights on the route at that hour (82%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 97% on time (30 flights)97SepOct 2025: 97% on time (31 flights)97OctNov 2025: 70% on time (30 flights)70NovDec 2025: 83% on time (30 flights)83DecJan 2026: too few flights (5 flights)JanFeb 2026: 71% on time (17 flights)71FebMar 2026: 81% on time (31 flights)81MarApr 2026: 66% on time (29 flights)66AprMay 2026: too few flights (10 flights)MayJun 2026: 93% on time (30 flights)93JunJul 2026: 87% on time (31 flights)87JulAug 2026: 87% on time (31 flights)87Aug

By day of week

DayFlightsOn time
Monday4587%
Tuesday4384%
Wednesday4388%
Thursday4386%
Friday4482%
Saturday4379%
Sunday4484%

Why it was late

Airline (crew, maintenance, ops) 44%Severe weather 21%Air traffic & airport (NAS) 19%Late inbound plane 16%

All flights ABE → ORD · Connecting off UA 4166? Check the risk

Questions

How often is UA 4166 from ABE to ORD late?

United Airlines 4166 from Allentown/Bethlehem/Easton, PA to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 16% of 305 scheduled flights between September 2025 and August 2026. 2.3% 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.