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(UA) United Airlines 591 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(EWR) Newark Liberty International Airport

Newark, NJ, US

(SAT) San Antonio International Airport

San Antonio, TX, US

On-Time Performance Chart

(using rounded numbers)
On-Time
45
94%
Late
1
2%
Very Late
0
0%
Excessive
1
2%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
47
Total Delays ( > 1 min )
2
Codeshares
0
Average Delay (min.)
85.5
Standard Deviation
95.5
Min
0
Max
153

UA 591 On-Time Performance Details

Overall Rating
2.7 of 5
Average
Percentage On-Time 96%
Average Delay Time 85.5 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.7 shows that this flight has on-time performance characteristics better than 53% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 96%
This flight has an on-time performance of 96%. 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
0.4 of 5
Very Poor
Average Delay Time 85.5 min
This flight has an average delay of 85.5 minutes with a standard deviation of 95.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 8% of other flights.

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