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(UA) United Airlines 4304 On-Time Performance Rating

Date Range:

01-Jun-2026 to 31-Jul-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(TYS) Knoxville McGhee Tyson Airport

Knoxville, TN, US

On-Time Performance Chart

(using rounded numbers)
On-Time
41
68%
Late
3
5%
Very Late
3
5%
Excessive
12
20%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
26
Codeshares
60
Average Delay (min.)
105.84615384615384
Standard Deviation
209.5
Min
0
Max
903

UA 4304 On-Time Performance Details

Overall Rating
0.6 of 5
Poor
Percentage On-Time 68%
Average Delay Time 105.84615384615384 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.6 shows that this flight has on-time performance characteristics better than 10% of all other flights in the FlightStats database.
On-Time Performance Rating
1.1 of 5
Poor
Percentage On-Time 68%
This flight has an on-time performance of 68%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 21% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 105.84615384615384 min
This flight has an average delay of 105.84615384615384 minutes with a standard deviation of 209.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.