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(UA) United Airlines 663 On-Time Performance Rating

Date Range:

15-Jun-2026 to 15-Aug-2026

(EWR) Newark Liberty International Airport

Newark, NJ, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
26
53%
Late
4
8%
Very Late
2
4%
Excessive
11
22%
Cancelled
4
8%
Diverted
2
4%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
47
Total Delays ( > 1 min )
22
Codeshares
0
Average Delay (min.)
105.77272727272727
Standard Deviation
118.8
Min
0
Max
450

UA 663 On-Time Performance Details

Overall Rating
0.0 of 5
Very Poor
Percentage On-Time 55%
Average Delay Time 105.77272727272727 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 55%
This flight has an on-time performance of 55%. 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 105.77272727272727 min
This flight has an average delay of 105.77272727272727 minutes with a standard deviation of 118.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.

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