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(UA) United Airlines 4537 On-Time Performance Rating

Date Range:

15-Jun-2026 to 15-Aug-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(GRB) Green Bay Austin Straubel International Airport

Green Bay, WI, US

On-Time Performance Chart

(using rounded numbers)
On-Time
47
84%
Late
2
4%
Very Late
1
2%
Excessive
6
11%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
56
Total Delays ( > 1 min )
14
Codeshares
56
Average Delay (min.)
56.42857142857143
Standard Deviation
71.1
Min
0
Max
253

UA 4537 On-Time Performance Details

Overall Rating
2.8 of 5
Average
Percentage On-Time 84%
Average Delay Time 56.42857142857143 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.8 shows that this flight has on-time performance characteristics better than 55% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 84%
This flight has an on-time performance of 84%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 98% of other flights.
Delay Performance
0.7 of 5
Poor
Average Delay Time 56.42857142857143 min
This flight has an average delay of 56.42857142857143 minutes with a standard deviation of 71.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 14% of other flights.

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