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(UA) United Airlines 4638 On-Time Performance Rating

Date Range:

15-Jul-2025 to 15-Sep-2025

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(COS) Colorado Springs Airport

Colorado Springs, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
38
69%
Late
6
11%
Very Late
4
7%
Excessive
3
5%
Cancelled
2
4%
Diverted
2
4%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
54
Total Delays ( > 1 min )
18
Codeshares
54
Average Delay (min.)
72.33333333333333
Standard Deviation
163.2
Min
0
Max
679

UA 4638 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 70%
Average Delay Time 72.33333333333333 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.5 shows that this flight has on-time performance characteristics better than 8% of all other flights in the FlightStats database.
On-Time Performance Rating
0.9 of 5
Poor
Percentage On-Time 70%
This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 18% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 72.33333333333333 min
This flight has an average delay of 72.33333333333333 minutes with a standard deviation of 163.2 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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