UA4645 ATW → ORD

United Airlines · Appleton, WI to Chicago, IL · 48 flights observed, 2025-09-25 to 2026-01-05 · 160 mi

This flight's reliability varies a lot by day of week — 88% on-time on Fridays vs. 43% on Mondays.

UA4645 covers more than one route in the data window — the stats below are for ATW → ORD, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
70%
Median delay
-3 min
90th percentile
+111 min
Cancellation rate
2%

How often is UA4645 on time?

Across 48 flights on ATW → ORD from 2025-09-25 to 2026-01-05, UA4645 arrived within 15 minutes of schedule 70% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +111 min or later. 2% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3370%
16-30 min36%
31-60 min36%
61-120 min49%
2+ hrs49%

Performance by month

MonthFlightsOn-timeAvg delay
2025-09683%-8 min
2025-102580%+20 min
2025-121155%+42 min
2026-01540%+136 min

Performance by day of week

DayFlightsOn-time
Mon743%
Tue650%
Wed580%
Thu683%
Fri888%
Sat875%
Sun771%

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