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(UA) United Airlines 3534 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
18
78%
Late
2
9%
Very Late
1
4%
Excessive
2
9%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
23
Total Delays ( > 1 min )
9
Codeshares
23
Average Delay (min.)
40.333333333333336
Standard Deviation
53.2
Min
0
Max
138

UA 3534 On-Time Performance Details

Overall Rating
2.2 of 5
Average
Percentage On-Time 78%
Average Delay Time 40.333333333333336 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.2 shows that this flight has on-time performance characteristics better than 43% of all other flights in the FlightStats database.
On-Time Performance Rating
2.9 of 5
Average
Percentage On-Time 78%
This flight has an on-time performance of 78%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 58% of other flights.
Delay Performance
1.5 of 5
Poor
Average Delay Time 40.333333333333336 min
This flight has an average delay of 40.333333333333336 minutes with a standard deviation of 53.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 31% of other flights.

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