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(UA) United Airlines 3591 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(PIT) Pittsburgh International Airport

Pittsburgh, PA, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
11
58%
Late
2
11%
Very Late
1
5%
Excessive
4
21%
Cancelled
1
5%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
19
Total Delays ( > 1 min )
9
Codeshares
19
Average Delay (min.)
50.22222222222222
Standard Deviation
41
Min
0
Max
125

UA 3591 On-Time Performance Details

Overall Rating
0.8 of 5
Poor
Percentage On-Time 58%
Average Delay Time 50.22222222222222 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.8 shows that this flight has on-time performance characteristics better than 15% of all other flights in the FlightStats database.
On-Time Performance Rating
0.4 of 5
Very Poor
Percentage On-Time 58%
This flight has an on-time performance of 58%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 8% of other flights.
Delay Performance
1.2 of 5
Poor
Average Delay Time 50.22222222222222 min
This flight has an average delay of 50.22222222222222 minutes with a standard deviation of 41 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 24% of other flights.

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