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(UA) United Airlines 4179 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(BTV) Patrick Leahy Burlington International Airport

Burlington, VT, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
15
79%
Late
1
5%
Very Late
1
5%
Excessive
1
5%
Cancelled
1
5%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
19
Total Delays ( > 1 min )
10
Codeshares
19
Average Delay (min.)
21.4
Standard Deviation
22.8
Min
0
Max
82

UA 4179 On-Time Performance Details

Overall Rating
3.4 of 5
Average
Percentage On-Time 79%
Average Delay Time 21.4 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.4 shows that this flight has on-time performance characteristics better than 66% of all other flights in the FlightStats database.
On-Time Performance Rating
2.9 of 5
Average
Percentage On-Time 79%
This flight has an on-time performance of 79%. 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
3.8 of 5
Good
Average Delay Time 21.4 min
This flight has an average delay of 21.4 minutes with a standard deviation of 22.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.

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