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(UA) United Airlines 4518 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-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
35
65%
Late
6
11%
Very Late
1
2%
Excessive
5
9%
Cancelled
6
11%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
53
Total Delays ( > 1 min )
16
Codeshares
53
Average Delay (min.)
51.1875
Standard Deviation
59.9
Min
0
Max
218

UA 4518 On-Time Performance Details

Overall Rating
0.6 of 5
Poor
Percentage On-Time 66%
Average Delay Time 51.1875 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
0.3 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 5% of other flights.
Delay Performance
0.8 of 5
Poor
Average Delay Time 51.1875 min
This flight has an average delay of 51.1875 minutes with a standard deviation of 59.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 16% of other flights.

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