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(UA) United Airlines 559 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(EWR) Newark Liberty International Airport

Newark, NJ, US

(MIA) Miami International Airport

Miami, FL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
55
92%
Late
4
7%
Very Late
0
0%
Excessive
1
2%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
8
Codeshares
0
Average Delay (min.)
22.625
Standard Deviation
23.7
Min
0
Max
78

UA 559 On-Time Performance Details

Overall Rating
4.3 of 5
Good
Percentage On-Time 92%
Average Delay Time 22.625 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.3 shows that this flight has on-time performance characteristics better than 84% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 92%
This flight has an on-time performance of 92%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 100% of other flights.
Delay Performance
3.5 of 5
Average
Average Delay Time 22.625 min
This flight has an average delay of 22.625 minutes with a standard deviation of 23.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 69% of other flights.