ON TIMEBOARD

UA 1842 on time

United Airlines 1842: Chicago to Sioux Falls at 9:30 p.m. (past 12 months)

On time
54%
204 flights · likely 47–61%
Cancelled
3.9%
of scheduled flights
Typical arrival
+6 min
median vs schedule
When late
+69 min
average delay
Similar flights
53%
UA, same route & hour

About 1 in 2 UA 1842 flights from Chicago arrived 15+ minutes late, diverted or cancelled over the past year (46%); 3.9% were cancelled. The typical flight landed 6 minutes late.

UA 1842: ORD → FSD

Scheduled to leave Chicago at 9:30 p.m. local time. Over the past year it arrived on time 54% of the time (204 flights), in line with other UA flights on the route at that hour (53%). Last seen in the data Aug 31, 2026.

Usually United Airlines's last flight of the day from Chicago to Sioux Falls (72% of days). United Airlines's last ORD–FSD flight was cancelled 4.4% of the time, against 1.8% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 8:40 a.m. the next morning.

Month by month

30%65%100%Aug 2025: too few flights (13 flights)AugSep 2025: 38% on time (24 flights)38SepMar 2026: 48% on time (27 flights)48MarApr 2026: 60% on time (30 flights)60AprMay 2026: 58% on time (31 flights)58MayJun 2026: 53% on time (30 flights)53JunJul 2026: 61% on time (31 flights)61JulAug 2026: 55% on time (31 flights)55Aug

By day of week

DayFlightsOn time
Monday3050%
Tuesday2959%
Wednesday2966%
Thursday2955%
Friday2952%
Saturday2959%
Sunday2938%

Why it was late

Late inbound plane 60%Airline (crew, maintenance, ops) 21%Air traffic & airport (NAS) 11%Severe weather 8%

All flights ORD → FSD · Connecting off UA 1842? Check the risk

Questions

How often is UA 1842 from ORD to FSD late?

United Airlines 1842 from Chicago, IL to Sioux Falls, SD arrived 15 or more minutes late, was diverted or was cancelled on 46% of 204 scheduled flights between September 2025 and August 2026. 3.9% 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.