UA1646 MIA → ORD

United Airlines · Miami, FL to Chicago, IL · 21 flights observed, 2026-02-12 to 2026-03-04 · 1,197 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is -5 min, while the worst 10% run +95 min or later.

UA1646 covers more than one route in the data window — the stats below are for MIA → ORD, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
76%
Median delay
-5 min
90th percentile
+95 min
Cancellation rate
0%

How often is UA1646 on time?

Across 21 flights on MIA → ORD from 2026-02-12 to 2026-03-04, UA1646 arrived within 15 minutes of schedule 76% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +95 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time1676%
16-30 min15%
31-60 min00%
61-120 min210%
2+ hrs210%

Performance by month

MonthFlightsOn-timeAvg delay
2026-021776%+10 min
2026-03475%+28 min

Performance by day of week

DayFlightsOn-time
Mon3100%
Tue3100%
Wed3100%
Thu3100%
Fri333%
Sat367%
Sun333%

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