ON TIMEBOARD

UA 426 on time

United Airlines 426: Detroit to Chicago at 9:00 a.m. (past 12 months)

On time
70%
345 flights · likely 65–74%
Cancelled
1.2%
of scheduled flights
Typical arrival
+2 min
median vs schedule
When late
+62 min
average delay
Similar flights
75%
UA, same route & hour

About 1 in 3 UA 426 flights from Detroit arrived 15+ minutes late, diverted or cancelled over the past year (30%); 1.2% were cancelled. The typical flight landed 2 minutes late.

UA 426: DTW → ORD

Scheduled to leave Detroit at 9:00 a.m. local time. Over the past year it arrived on time 70% of the time (345 flights), worse than other UA flights on the route at that hour (75%). Last seen in the data Aug 31, 2026.

Month by month

30%65%100%Sep 2025: 47% on time (30 flights)47SepOct 2025: 52% on time (31 flights)52OctNov 2025: 67% on time (30 flights)67NovDec 2025: 65% on time (17 flights)65DecJan 2026: 42% on time (26 flights)42JanFeb 2026: 82% on time (28 flights)82FebMar 2026: 63% on time (30 flights)63MarApr 2026: 83% on time (30 flights)83AprMay 2026: 74% on time (31 flights)74MayJun 2026: 87% on time (30 flights)87JunJul 2026: 81% on time (31 flights)81JulAug 2026: 90% on time (31 flights)90Aug

By day of week

DayFlightsOn time
Monday5070%
Tuesday5070%
Wednesday5074%
Thursday4879%
Friday4963%
Saturday4969%
Sunday4963%

Why it was late

Air traffic & airport (NAS) 59%Late inbound plane 23%Airline (crew, maintenance, ops) 18%

All flights DTW → ORD · Connecting off UA 426? Check the risk

Questions

How often is UA 426 from DTW to ORD late?

United Airlines 426 from Detroit, MI to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 30% of 345 scheduled flights between September 2025 and August 2026. 1.2% 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.