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(UA) United Airlines 3517 On-Time Performance Rating

Date Range:

15-Jul-2025 to 15-Sep-2025

(IAD) Washington Dulles International Airport

Dulles, VA, US

(PWM) Portland International Jetport

Portland, ME, US

On-Time Performance Chart

(using rounded numbers)
On-Time
51
84%
Late
3
5%
Very Late
1
2%
Excessive
3
5%
Cancelled
2
3%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
12
Codeshares
60
Average Delay (min.)
51.333333333333336
Standard Deviation
72.4
Min
0
Max
204

UA 3517 On-Time Performance Details

Overall Rating
2.9 of 5
Average
Percentage On-Time 85%
Average Delay Time 51.333333333333336 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 56% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 85%
This flight has an on-time performance of 85%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 98% of other flights.
Delay Performance
0.8 of 5
Poor
Average Delay Time 51.333333333333336 min
This flight has an average delay of 51.333333333333336 minutes with a standard deviation of 72.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 16% of other flights.

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