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(UA) United Airlines 4517 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(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
47
80%
Late
4
7%
Very Late
2
3%
Excessive
4
7%
Cancelled
1
2%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
58
Total Delays ( > 1 min )
17
Codeshares
58
Average Delay (min.)
70.11764705882354
Standard Deviation
120.2
Min
0
Max
466

UA 4517 On-Time Performance Details

Overall Rating
2.4 of 5
Average
Percentage On-Time 81%
Average Delay Time 70.11764705882354 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 47% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 81%
This flight has an on-time performance of 81%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 95% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 70.11764705882354 min
This flight has an average delay of 70.11764705882354 minutes with a standard deviation of 120.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 1% of other flights.

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