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(UA) United Airlines 3597 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(CHS) Charleston International Airport

Charleston, SC, US

On-Time Performance Chart

(using rounded numbers)
On-Time
38
70%
Late
4
7%
Very Late
3
6%
Excessive
8
15%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
54
Total Delays ( > 1 min )
22
Codeshares
54
Average Delay (min.)
39.90909090909091
Standard Deviation
33.5
Min
0
Max
125

UA 3597 On-Time Performance Details

Overall Rating
1.3 of 5
Poor
Percentage On-Time 70%
Average Delay Time 39.90909090909091 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.3 shows that this flight has on-time performance characteristics better than 24% of all other flights in the FlightStats database.
On-Time Performance Rating
1.1 of 5
Poor
Percentage On-Time 70%
This flight has an on-time performance of 70%. 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
1.4 of 5
Poor
Average Delay Time 39.90909090909091 min
This flight has an average delay of 39.90909090909091 minutes with a standard deviation of 33.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 27% of other flights.

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