background

(UA) United Airlines 4278 On-Time Performance Rating

Date Range:

01-Mar-2026 to 30-Apr-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(BDL) Bradley International Airport

Hartford, CT, US

On-Time Performance Chart

(using rounded numbers)
On-Time
4
100%
Late
0
0%
Very Late
0
0%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
4
Total Delays ( > 1 min )
1
Codeshares
4
Average Delay (min.)
4
Standard Deviation
0
Min
0
Max
4

UA 4278 On-Time Performance Details

Overall Rating
3.9 of 5
Good
Percentage On-Time 100%
Average Delay Time 4 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.9 shows that this flight has on-time performance characteristics better than 77% of all other flights in the FlightStats database.
On-Time Performance Rating
4.3 of 5
Good
Percentage On-Time 100%
This flight has an on-time performance of 100%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 86% of other flights.
Delay Performance
3.5 of 5
Average
Average Delay Time 4 min
This flight has an average delay of 4 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 69% of other flights.

Other Stops for UA 4278