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(UA) United Airlines 3597 On-Time Performance Rating

Date Range:

01-Nov-2025 to 31-Dec-2025

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
27
64%
Late
4
10%
Very Late
3
7%
Excessive
6
14%
Cancelled
1
2%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
41
Total Delays ( > 1 min )
19
Codeshares
41
Average Delay (min.)
51.31578947368421
Standard Deviation
67.4
Min
0
Max
278

UA 3597 On-Time Performance Details

Overall Rating
0.6 of 5
Poor
Percentage On-Time 66%
Average Delay Time 51.31578947368421 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.6 shows that this flight has on-time performance characteristics better than 10% of all other flights in the FlightStats database.
On-Time Performance Rating
0.5 of 5
Very Poor
Percentage On-Time 66%
This flight has an on-time performance of 66%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 10% of other flights.
Delay Performance
0.6 of 5
Poor
Average Delay Time 51.31578947368421 min
This flight has an average delay of 51.31578947368421 minutes with a standard deviation of 67.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 12% of other flights.

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