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(UA) United Airlines 4421 On-Time Performance Rating

Date Range:

15-Nov-2025 to 15-Jan-2026

(EWR) Newark Liberty International Airport

Newark, NJ, US

(BTV) Patrick Leahy Burlington International Airport

Burlington, VT, US

On-Time Performance Chart

(using rounded numbers)
On-Time
14
74%
Late
3
16%
Very Late
1
5%
Excessive
0
0%
Cancelled
1
5%
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.)
18.571428571428573
Standard Deviation
13.8
Min
0
Max
36

UA 4421 On-Time Performance Details

Overall Rating
3.3 of 5
Average
Percentage On-Time 74%
Average Delay Time 18.571428571428573 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 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 54% of other flights.
Delay Performance
3.9 of 5
Good
Average Delay Time 18.571428571428573 min
This flight has an average delay of 18.571428571428573 minutes with a standard deviation of 13.8 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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