(UA) United Airlines 1531 On-Time Performance Rating

Date Range:

15-Aug-2025 to 15-Oct-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

54%

Late

Very Late

Excessive

35%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

54.92307692307692

Standard Deviation

60.5

Min

Max

217

UA 1531 On-Time Performance Details

Overall Rating

0.0 of 5

Very Poor

Percentage On-Time 54%

Average Delay Time 54.92307692307692 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 54%

This flight has an on-time performance of 54%. 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 54.92307692307692 min

This flight has an average delay of 54.92307692307692 minutes with a standard deviation of 60.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 1% of other flights.