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(UA) United Airlines 4381 On-Time Performance Rating

Date Range:

01-Nov-2025 to 31-Dec-2025

(BUF) Buffalo Niagara International Airport

Buffalo, NY, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
29
45%
Late
4
6%
Very Late
4
6%
Excessive
19
30%
Cancelled
4
6%
Diverted
4
6%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
33
Codeshares
60
Average Delay (min.)
94.93939393939394
Standard Deviation
112.1
Min
0
Max
435

UA 4381 On-Time Performance Details

Overall Rating
0.0 of 5
Very Poor
Percentage On-Time 48%
Average Delay Time 94.93939393939394 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 48%
This flight has an on-time performance of 48%. 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 94.93939393939394 min
This flight has an average delay of 94.93939393939394 minutes with a standard deviation of 112.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.