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(UA) United Airlines 4588 On-Time Performance Rating

Date Range:

15-Jul-2026 to 15-Sep-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(CMH) John Glenn Columbus International Airport

Columbus, OH, US

On-Time Performance Chart

(using rounded numbers)
On-Time
17
74%
Late
1
4%
Very Late
0
0%
Excessive
1
4%
Cancelled
2
9%
Diverted
2
9%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
21
Total Delays ( > 1 min )
7
Codeshares
21
Average Delay (min.)
39.57142857142857
Standard Deviation
83.2
Min
0
Max
228

UA 4588 On-Time Performance Details

Overall Rating
3.1 of 5
Average
Percentage On-Time 81%
Average Delay Time 39.57142857142857 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.1 shows that this flight has on-time performance characteristics better than 61% of all other flights in the FlightStats database.
On-Time Performance Rating
4.1 of 5
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 82% of other flights.
Delay Performance
2.1 of 5
Average
Average Delay Time 39.57142857142857 min
This flight has an average delay of 39.57142857142857 minutes with a standard deviation of 83.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 42% of other flights.

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