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(UA) United Airlines 4001 On-Time Performance Rating

Date Range:

01-Nov-2025 to 31-Dec-2025

(BHM) Birmingham-Shuttlesworth International Airport

Birmingham, AL, US

(IAH) Houston George Bush Intercontinental Airport

Houston, TX, US

On-Time Performance Chart

(using rounded numbers)
On-Time
13
93%
Late
0
0%
Very Late
1
7%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
14
Total Delays ( > 1 min )
3
Codeshares
14
Average Delay (min.)
19
Standard Deviation
14.7
Min
0
Max
36

UA 4001 On-Time Performance Details

Overall Rating
4.1 of 5
Good
Percentage On-Time 93%
Average Delay Time 19 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.1 shows that this flight has on-time performance characteristics better than 81% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 93%
This flight has an on-time performance of 93%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 95% of other flights.
Delay Performance
3.5 of 5
Average
Average Delay Time 19 min
This flight has an average delay of 19 minutes with a standard deviation of 14.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 69% of other flights.

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