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(UA) United Airlines 3663 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-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
15
88%
Late
0
0%
Very Late
0
0%
Excessive
0
0%
Cancelled
2
12%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
17
Total Delays ( > 1 min )
9
Codeshares
17
Average Delay (min.)
6.777777777777778
Standard Deviation
3.3
Min
0
Max
12

UA 3663 On-Time Performance Details

Overall Rating
4.6 of 5
Very Good
Percentage On-Time 88%
Average Delay Time 6.777777777777778 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 90% of all other flights in the FlightStats database.
On-Time Performance Rating
4.5 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 90% of other flights.
Delay Performance
4.6 of 5
Very Good
Average Delay Time 6.777777777777778 min
This flight has an average delay of 6.777777777777778 minutes with a standard deviation of 3.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 92% of other flights.

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