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(UA) United Airlines 4170 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-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
19
95%
Late
0
0%
Very Late
0
0%
Excessive
1
5%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
20
Total Delays ( > 1 min )
2
Codeshares
20
Average Delay (min.)
60.5
Standard Deviation
84.1
Min
0
Max
120

UA 4170 On-Time Performance Details

Overall Rating
3.0 of 5
Average
Percentage On-Time 95%
Average Delay Time 60.5 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 59% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 95%
This flight has an on-time performance of 95%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 98% of other flights.
Delay Performance
1.1 of 5
Poor
Average Delay Time 60.5 min
This flight has an average delay of 60.5 minutes with a standard deviation of 84.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 21% of other flights.

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