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(UA) United Airlines 4045 On-Time Performance Rating

Date Range:

15-Apr-2026 to 15-Jun-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(RDU) Raleigh-Durham International Airport

Raleigh/Durham, NC, US

On-Time Performance Chart

(using rounded numbers)
On-Time
16
73%
Late
4
18%
Very Late
0
0%
Excessive
1
5%
Cancelled
1
5%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
22
Total Delays ( > 1 min )
9
Codeshares
22
Average Delay (min.)
28.666666666666668
Standard Deviation
46.5
Min
0
Max
151

UA 4045 On-Time Performance Details

Overall Rating
2.1 of 5
Average
Percentage On-Time 73%
Average Delay Time 28.666666666666668 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.1 shows that this flight has on-time performance characteristics better than 40% of all other flights in the FlightStats database.
On-Time Performance Rating
1.2 of 5
Poor
Percentage On-Time 73%
This flight has an on-time performance of 73%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 24% of other flights.
Delay Performance
2.9 of 5
Average
Average Delay Time 28.666666666666668 min
This flight has an average delay of 28.666666666666668 minutes with a standard deviation of 46.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 58% of other flights.

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