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(UA) United Airlines 3984 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(BUF) Buffalo Niagara International Airport

Buffalo, NY, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
0
0%
Late
0
0%
Very Late
0
0%
Excessive
1
100%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
1
Total Delays ( > 1 min )
1
Codeshares
1
Average Delay (min.)
76
Standard Deviation
0
Min
76
Max
76

UA 3984 On-Time Performance Details

Overall Rating
0.7 of 5
Poor
Percentage On-Time 0%
Average Delay Time 76 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.7 shows that this flight has on-time performance characteristics better than 13% of all other flights in the FlightStats database.
On-Time Performance Rating
0.2 of 5
Very Poor
Percentage On-Time 0%
This flight has an on-time performance of 0%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 4% of other flights.
Delay Performance
1.2 of 5
Poor
Average Delay Time 76 min
This flight has an average delay of 76 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 24% of other flights.

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