UA4573 MLI → ORD

United Airlines · Moline, IL to Chicago, IL · 123 flights observed, 2025-07-01 to 2026-03-04 · 139 mi

This flight's reliability varies a lot by day of week — 72% on-time on Sundays vs. 36% on Saturdays.

UA4573 covers more than one route in the data window — the stats below are for MLI → ORD, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
55%
Median delay
+11 min
90th percentile
+146 min
Cancellation rate
2%

How often is UA4573 on time?

Across 123 flights on MLI → ORD from 2025-07-01 to 2026-03-04, UA4573 arrived within 15 minutes of schedule 55% of the time. The median arrival delay was +11 min, and the worst 10% of flights arrived +146 min or later. 2% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time6655%
16-30 min1714%
31-60 min108%
61-120 min1311%
2+ hrs1412%

Performance by month

MonthFlightsOn-timeAvg delay
2025-073155%+57 min
2025-082752%+22 min
2025-092176%+5 min
2025-10450%+78 min
2025-122335%+78 min
2026-013100%-3 min
2026-02757%+14 min
2026-03450%+7 min

Performance by day of week

DayFlightsOn-time
Mon1861%
Tue2143%
Wed1947%
Thu1867%
Fri1553%
Sat1136%
Sun1872%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…