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(UA) United Airlines 3540 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(PIT) Pittsburgh International Airport

Pittsburgh, PA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
52
87%
Late
3
5%
Very Late
1
2%
Excessive
2
3%
Cancelled
2
3%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
11
Codeshares
60
Average Delay (min.)
20.363636363636363
Standard Deviation
18.5
Min
0
Max
52

UA 3540 On-Time Performance Details

Overall Rating
4.4 of 5
Good
Percentage On-Time 87%
Average Delay Time 20.363636363636363 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.4 shows that this flight has on-time performance characteristics better than 87% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 87%
This flight has an on-time performance of 87%. 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
3.9 of 5
Good
Average Delay Time 20.363636363636363 min
This flight has an average delay of 20.363636363636363 minutes with a standard deviation of 18.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 79% of other flights.