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(UA) United Airlines 3597 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(YUL) Montreal-Trudeau International Airport

Montreal, QC, CA

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
15
79%
Late
0
0%
Very Late
0
0%
Excessive
3
16%
Cancelled
0
0%
Diverted
1
5%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
18
Total Delays ( > 1 min )
3
Codeshares
18
Average Delay (min.)
70.33333333333333
Standard Deviation
26.8
Min
0
Max
100

UA 3597 On-Time Performance Details

Overall Rating
2.4 of 5
Average
Percentage On-Time 83%
Average Delay Time 70.33333333333333 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.4 shows that this flight has on-time performance characteristics better than 46% of all other flights in the FlightStats database.
On-Time Performance Rating
4.1 of 5
Good
Percentage On-Time 83%
This flight has an on-time performance of 83%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 82% of other flights.
Delay Performance
0.6 of 5
Poor
Average Delay Time 70.33333333333333 min
This flight has an average delay of 70.33333333333333 minutes with a standard deviation of 26.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 12% of other flights.

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