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(UA) United Airlines 4537 On-Time Performance Rating

Date Range:

01-Mar-2026 to 30-Apr-2026

(BTV) Patrick Leahy Burlington International Airport

Burlington, VT, US

(EWR) Newark Liberty International Airport

Newark, NJ, US

On-Time Performance Chart

(using rounded numbers)
On-Time
35
73%
Late
3
6%
Very Late
2
4%
Excessive
7
15%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
47
Total Delays ( > 1 min )
16
Codeshares
47
Average Delay (min.)
51.5
Standard Deviation
68.1
Min
0
Max
284

UA 4537 On-Time Performance Details

Overall Rating
0.7 of 5
Poor
Percentage On-Time 75%
Average Delay Time 51.5 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.7 shows that this flight has on-time performance characteristics better than 13% of all other flights in the FlightStats database.
On-Time Performance Rating
1.1 of 5
Poor
Percentage On-Time 75%
This flight has an on-time performance of 75%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 21% of other flights.
Delay Performance
0.3 of 5
Very Poor
Average Delay Time 51.5 min
This flight has an average delay of 51.5 minutes with a standard deviation of 68.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 7% of other flights.

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