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(UA) United Airlines 1531 On-Time Performance Rating

Date Range:

01-Jul-2025 to 31-Aug-2025

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(BOS) Boston Logan International Airport

Boston, MA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
10
77%
Late
2
15%
Very Late
0
0%
Excessive
1
8%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
13
Total Delays ( > 1 min )
6
Codeshares
0
Average Delay (min.)
45.833333333333336
Standard Deviation
84.6
Min
0
Max
217

UA 1531 On-Time Performance Details

Overall Rating
2.6 of 5
Average
Percentage On-Time 77%
Average Delay Time 45.833333333333336 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.6 shows that this flight has on-time performance characteristics better than 51% of all other flights in the FlightStats database.
On-Time Performance Rating
3.5 of 5
Average
Percentage On-Time 77%
This flight has an on-time performance of 77%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 69% of other flights.
Delay Performance
1.7 of 5
Average
Average Delay Time 45.833333333333336 min
This flight has an average delay of 45.833333333333336 minutes with a standard deviation of 84.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 34% of other flights.

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