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(UA) United Airlines 4821 On-Time Performance Rating

Date Range:

01-Mar-2026 to 30-Apr-2026

(IAH) Houston George Bush Intercontinental Airport

Houston, TX, US

(AMA) Rick Husband Amarillo International Airport

Amarillo, TX, US

On-Time Performance Chart

(using rounded numbers)
On-Time
38
81%
Late
3
6%
Very Late
2
4%
Excessive
3
6%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
47
Total Delays ( > 1 min )
10
Codeshares
47
Average Delay (min.)
38.8
Standard Deviation
37.7
Min
0
Max
131

UA 4821 On-Time Performance Details

Overall Rating
2.7 of 5
Average
Percentage On-Time 81%
Average Delay Time 38.8 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.7 shows that this flight has on-time performance characteristics better than 52% of all other flights in the FlightStats database.
On-Time Performance Rating
3.6 of 5
Good
Percentage On-Time 81%
This flight has an on-time performance of 81%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 73% of other flights.
Delay Performance
1.7 of 5
Average
Average Delay Time 38.8 min
This flight has an average delay of 38.8 minutes with a standard deviation of 37.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 34% of other flights.