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(UA) United Airlines 4257 On-Time Performance Rating

Date Range:

01-Mar-2024 to 30-Apr-2024

(IAD) Washington Dulles International Airport

Dulles, VA, US

(TYS) McGhee Tyson Airport

Knoxville, TN, US

On-Time Performance Chart

(using rounded numbers)
On-Time
57
93%
Late
0
0%
Very Late
1
2%
Excessive
3
5%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
10
Codeshares
61
Average Delay (min.)
49.6
Standard Deviation
69.2
Min
0
Max
199

UA 4257 On-Time Performance Details

Overall Rating
2.9 of 5
Average
Percentage On-Time 93%
Average Delay Time 49.6 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.9 shows that this flight has on-time performance characteristics better than 57% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 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 100% of other flights.
Delay Performance
0.8 of 5
Poor
Average Delay Time 49.6 min
This flight has an average delay of 49.6 minutes with a standard deviation of 69.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 16% of other flights.