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(UA) United Airlines 3509 On-Time Performance Rating

Date Range:

01-Jul-2025 to 31-Aug-2025

(IAD) Washington Dulles International Airport

Dulles, VA, US

(YYZ) Toronto Pearson International Airport

Toronto, ON, CA

On-Time Performance Chart

(using rounded numbers)
On-Time
18
69%
Late
2
8%
Very Late
2
8%
Excessive
2
8%
Cancelled
1
4%
Diverted
1
4%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
25
Total Delays ( > 1 min )
10
Codeshares
25
Average Delay (min.)
23.7
Standard Deviation
20.7
Min
0
Max
57

UA 3509 On-Time Performance Details

Overall Rating
3.3 of 5
Average
Percentage On-Time 72%
Average Delay Time 23.7 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.3 shows that this flight has on-time performance characteristics better than 65% of all other flights in the FlightStats database.
On-Time Performance Rating
2.7 of 5
Average
Percentage On-Time 72%
This flight has an on-time performance of 72%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 54% of other flights.
Delay Performance
3.9 of 5
Good
Average Delay Time 23.7 min
This flight has an average delay of 23.7 minutes with a standard deviation of 20.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 79% of other flights.

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