(UA) United Airlines 366 On-Time Performance Rating

Date Range:

01-Sep-2025 to 31-Oct-2025

(BOS) Boston Logan International Airport

Boston, MA, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

96%

Late

Very Late

Excessive

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

11.125

Standard Deviation

17.9

Min

Max

UA 366 On-Time Performance Details

Overall Rating

4.6 of 5

Very Good

Percentage On-Time 96%

Average Delay Time 11.125 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.6 shows that this flight has on-time performance characteristics better than 91% of all other flights in the FlightStats database.

On-Time Performance Rating

4.9 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 99% of other flights.

Delay Performance

4.3 of 5

Good

Average Delay Time 11.125 min

This flight has an average delay of 11.125 minutes with a standard deviation of 17.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 86% of other flights.