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(UA) United Airlines 4518 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-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
31
52%
Late
7
12%
Very Late
1
2%
Excessive
20
33%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
37
Codeshares
60
Average Delay (min.)
94.1891891891892
Standard Deviation
151.9
Min
0
Max
877

UA 4518 On-Time Performance Details

Overall Rating
0.0 of 5
Very Poor
Percentage On-Time 52%
Average Delay Time 94.1891891891892 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0 shows that this flight has on-time performance characteristics better than 0% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 52%
This flight has an on-time performance of 52%. 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
0.0 of 5
Very Poor
Average Delay Time 94.1891891891892 min
This flight has an average delay of 94.1891891891892 minutes with a standard deviation of 151.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.