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(UA) United Airlines 9721 On-Time Performance Rating

Date Range:

01-Apr-2025 to 31-May-2025

(BOS) Boston Logan International Airport

Boston, MA, US

(ZRH) Zurich Airport

Zurich, CH

On-Time Performance Chart

(using rounded numbers)
On-Time
35
59%
Late
17
29%
Very Late
4
7%
Excessive
2
3%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
59
Total Delays ( > 1 min )
43
Codeshares
59
Average Delay (min.)
17.790697674418606
Standard Deviation
15.8
Min
0
Max
81

UA 9721 On-Time Performance Details

Overall Rating
2.4 of 5
Average
Percentage On-Time 59%
Average Delay Time 17.790697674418606 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.4 shows that this flight has on-time performance characteristics better than 47% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 59%
This flight has an on-time performance of 59%. 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
4.8 of 5
Very Good
Average Delay Time 17.790697674418606 min
This flight has an average delay of 17.790697674418606 minutes with a standard deviation of 15.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 96% of other flights.