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(UA) United Airlines 4537 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(YOW) Ottawa Macdonald-Cartier International Airport

Ottawa, ON, CA

(EWR) Newark Liberty International Airport

Newark, NJ, US

On-Time Performance Chart

(using rounded numbers)
On-Time
25
66%
Late
3
8%
Very Late
2
5%
Excessive
5
13%
Cancelled
2
5%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
37
Total Delays ( > 1 min )
11
Codeshares
37
Average Delay (min.)
71.36363636363636
Standard Deviation
74.3
Min
0
Max
224

UA 4537 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 68%
Average Delay Time 71.36363636363636 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.5 shows that this flight has on-time performance characteristics better than 9% of all other flights in the FlightStats database.
On-Time Performance Rating
0.9 of 5
Poor
Percentage On-Time 68%
This flight has an on-time performance of 68%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 18% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 71.36363636363636 min
This flight has an average delay of 71.36363636363636 minutes with a standard deviation of 74.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 2% of other flights.

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