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(UA) United Airlines 4491 On-Time Performance Rating

Date Range:

15-Oct-2025 to 15-Dec-2025

(TYS) Knoxville McGhee Tyson Airport

Knoxville, TN, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
10
67%
Late
1
7%
Very Late
1
7%
Excessive
2
13%
Cancelled
0
0%
Diverted
1
7%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
14
Total Delays ( > 1 min )
6
Codeshares
14
Average Delay (min.)
75.66666666666667
Standard Deviation
97.4
Min
0
Max
246

UA 4491 On-Time Performance Details

Overall Rating
0.8 of 5
Poor
Percentage On-Time 71%
Average Delay Time 75.66666666666667 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.8 shows that this flight has on-time performance characteristics better than 15% of all other flights in the FlightStats database.
On-Time Performance Rating
1.5 of 5
Poor
Percentage On-Time 71%
This flight has an on-time performance of 71%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 31% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 75.66666666666667 min
This flight has an average delay of 75.66666666666667 minutes with a standard deviation of 97.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 3% of other flights.

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