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(UA) United Airlines 521 On-Time Performance Rating

Date Range:

01-Mar-2025 to 30-Apr-2025

(BOS) Boston Logan International Airport

Boston, MA, US

(EWR) Newark Liberty International Airport

Newark, NJ, US

On-Time Performance Chart

(using rounded numbers)
On-Time
30
56%
Late
1
2%
Very Late
1
2%
Excessive
19
35%
Cancelled
1
2%
Diverted
2
4%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
52
Total Delays ( > 1 min )
26
Codeshares
0
Average Delay (min.)
98.65384615384616
Standard Deviation
91.6
Min
0
Max
356

UA 521 On-Time Performance Details

Overall Rating
0.0 of 5
Very Poor
Percentage On-Time 58%
Average Delay Time 98.65384615384616 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 58%
This flight has an on-time performance of 58%. 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 98.65384615384616 min
This flight has an average delay of 98.65384615384616 minutes with a standard deviation of 91.6 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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