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(UA) United Airlines 511 On-Time Performance Rating

Date Range:

01-Jul-2025 to 31-Aug-2025

(PHL) Philadelphia International Airport

Philadelphia, PA, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
49
78%
Late
5
8%
Very Late
1
2%
Excessive
6
10%
Cancelled
0
0%
Diverted
2
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
23
Codeshares
0
Average Delay (min.)
63.34782608695652
Standard Deviation
130.6
Min
0
Max
569

UA 511 On-Time Performance Details

Overall Rating
2.4 of 5
Average
Percentage On-Time 80%
Average Delay Time 63.34782608695652 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 80%
This flight has an on-time performance of 80%. 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 63.34782608695652 min
This flight has an average delay of 63.34782608695652 minutes with a standard deviation of 130.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 2% of other flights.

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