UA4558 ORD → MLI

United Airlines · Chicago, IL to Moline, IL · 11 flights observed, 2025-12-18 to 2026-01-05 · 139 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is -4 min, while the worst 10% run +106 min or later.

UA4558 covers more than one route in the data window — the stats below are for ORD → MLI, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
73%
Median delay
-4 min
90th percentile
+106 min
Cancellation rate
0%

How often is UA4558 on time?

Across 11 flights on ORD → MLI from 2025-12-18 to 2026-01-05, UA4558 arrived within 15 minutes of schedule 73% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +106 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time873%
16-30 min00%
31-60 min00%
61-120 min218%
2+ hrs19%

Performance by month

MonthFlightsOn-timeAvg delay
2025-12863%+31 min
2026-013100%-10 min

Performance by day of week

DayFlightsOn-time
Mon367%
Tue250%
WedNo data—
Thu3100%
FriNo data—
SatNo data—
Sun367%

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