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(UA) United Airlines 8533 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(YYZ) Toronto Pearson International Airport

Toronto, ON, CA

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
13
21%
Late
13
21%
Very Late
8
13%
Excessive
16
25%
Cancelled
11
17%
Diverted
2
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
44
Codeshares
61
Average Delay (min.)
43.13636363636363
Standard Deviation
35.4
Min
0
Max
158

UA 8533 On-Time Performance Details

Overall Rating
0.3 of 5
Very Poor
Percentage On-Time 21%
Average Delay Time 43.13636363636363 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.3 shows that this flight has on-time performance characteristics better than 5% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 21%
This flight has an on-time performance of 21%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
0.6 of 5
Poor
Average Delay Time 43.13636363636363 min
This flight has an average delay of 43.13636363636363 minutes with a standard deviation of 35.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 12% of other flights.