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(UA) United Airlines 4425 On-Time Performance Rating

Date Range:

15-Apr-2026 to 15-Jun-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
9
50%
Late
4
22%
Very Late
0
0%
Excessive
4
22%
Cancelled
1
6%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
18
Total Delays ( > 1 min )
12
Codeshares
18
Average Delay (min.)
33.166666666666664
Standard Deviation
31
Min
0
Max
105

UA 4425 On-Time Performance Details

Overall Rating
1.2 of 5
Poor
Percentage On-Time 50%
Average Delay Time 33.166666666666664 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.2 shows that this flight has on-time performance characteristics better than 22% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 50%
This flight has an on-time performance of 50%. 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
2.3 of 5
Average
Average Delay Time 33.166666666666664 min
This flight has an average delay of 33.166666666666664 minutes with a standard deviation of 31 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 46% of other flights.

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