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(UA) United Airlines 4228 On-Time Performance Rating

Date Range:

01-Aug-2026 to 30-Sep-2026

(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
31
94%
Late
1
3%
Very Late
0
0%
Excessive
1
3%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
33
Total Delays ( > 1 min )
9
Codeshares
33
Average Delay (min.)
12.666666666666666
Standard Deviation
15.5
Min
0
Max
51

UA 4228 On-Time Performance Details

Overall Rating
4.7 of 5
Very Good
Percentage On-Time 94%
Average Delay Time 12.666666666666666 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.7 shows that this flight has on-time performance characteristics better than 92% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 94%
This flight has an on-time performance of 94%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 100% of other flights.
Delay Performance
4.3 of 5
Good
Average Delay Time 12.666666666666666 min
This flight has an average delay of 12.666666666666666 minutes with a standard deviation of 15.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 86% of other flights.

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