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(UA) United Airlines 4538 On-Time Performance Rating

Date Range:

01-Jun-2026 to 31-Jul-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
70%
Late
1
5%
Very Late
0
0%
Excessive
2
10%
Cancelled
3
15%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
20
Total Delays ( > 1 min )
5
Codeshares
20
Average Delay (min.)
49
Standard Deviation
66.5
Min
0
Max
160

UA 4538 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 70%
Average Delay Time 49 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 33% of all other flights in the FlightStats database.
On-Time Performance Rating
1.9 of 5
Average
Percentage On-Time 70%
This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 38% of other flights.
Delay Performance
1.5 of 5
Poor
Average Delay Time 49 min
This flight has an average delay of 49 minutes with a standard deviation of 66.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 31% of other flights.

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