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(UA) United Airlines 4559 On-Time Performance Rating

Date Range:

01-Sep-2026 to 31-Oct-2026

(ABE) Lehigh Valley International Airport

Allentown, PA, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
4
67%
Late
0
0%
Very Late
0
0%
Excessive
2
33%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
6
Total Delays ( > 1 min )
2
Codeshares
6
Average Delay (min.)
193
Standard Deviation
84.9
Min
0
Max
253

UA 4559 On-Time Performance Details

Overall Rating
0.6 of 5
Poor
Percentage On-Time 67%
Average Delay Time 193 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.6 shows that this flight has on-time performance characteristics better than 11% of all other flights in the FlightStats database.
On-Time Performance Rating
1.2 of 5
Poor
Percentage On-Time 67%
This flight has an on-time performance of 67%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 24% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 193 min
This flight has an average delay of 193 minutes with a standard deviation of 84.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.

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