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(UA) United Airlines 311 On-Time Performance Rating

Date Range:

01-Jun-2026 to 31-Jul-2026

(DUB) Dublin Airport

Dublin, IE

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
46
75%
Late
3
5%
Very Late
3
5%
Excessive
6
10%
Cancelled
3
5%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
15
Codeshares
0
Average Delay (min.)
66.06666666666666
Standard Deviation
60.6
Min
0
Max
168

UA 311 On-Time Performance Details

Overall Rating
1.9 of 5
Average
Percentage On-Time 75%
Average Delay Time 66.06666666666666 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.9 shows that this flight has on-time performance characteristics better than 36% of all other flights in the FlightStats database.
On-Time Performance Rating
3.5 of 5
Average
Percentage On-Time 75%
This flight has an on-time performance of 75%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 69% of other flights.
Delay Performance
0.2 of 5
Very Poor
Average Delay Time 66.06666666666666 min
This flight has an average delay of 66.06666666666666 minutes with a standard deviation of 60.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 4% of other flights.