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(UA) United Airlines 4440 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(MHT) Manchester-Boston Regional Airport

Manchester, NH, US

On-Time Performance Chart

(using rounded numbers)
On-Time
14
74%
Late
2
11%
Very Late
1
5%
Excessive
2
11%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
19
Total Delays ( > 1 min )
7
Codeshares
19
Average Delay (min.)
65.14285714285714
Standard Deviation
92.4
Min
0
Max
265

UA 4440 On-Time Performance Details

Overall Rating
1.0 of 5
Poor
Percentage On-Time 74%
Average Delay Time 65.14285714285714 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1 shows that this flight has on-time performance characteristics better than 19% of all other flights in the FlightStats database.
On-Time Performance Rating
1.7 of 5
Average
Percentage On-Time 74%
This flight has an on-time performance of 74%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 34% of other flights.
Delay Performance
0.3 of 5
Very Poor
Average Delay Time 65.14285714285714 min
This flight has an average delay of 65.14285714285714 minutes with a standard deviation of 92.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 5% of other flights.

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