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(UA) United Airlines 646 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(PWM) Portland International Jetport

Portland, ME, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
7
88%
Late
0
0%
Very Late
1
13%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
8
Total Delays ( > 1 min )
1
Codeshares
0
Average Delay (min.)
38
Standard Deviation
0
Min
0
Max
38

UA 646 On-Time Performance Details

Overall Rating
3.0 of 5
Average
Percentage On-Time 88%
Average Delay Time 38 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3 shows that this flight has on-time performance characteristics better than 58% of all other flights in the FlightStats database.
On-Time Performance Rating
3.8 of 5
Good
Percentage On-Time 88%
This flight has an on-time performance of 88%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 76% of other flights.
Delay Performance
2.1 of 5
Average
Average Delay Time 38 min
This flight has an average delay of 38 minutes with a standard deviation of 0 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 42% of other flights.

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