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(UA) United Airlines 4840 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(CHO) Charlottesville Albemarle Airport

Charlottesville, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
46
75%
Late
1
2%
Very Late
0
0%
Excessive
11
18%
Cancelled
1
2%
Diverted
2
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
59
Total Delays ( > 1 min )
17
Codeshares
59
Average Delay (min.)
138.23529411764707
Standard Deviation
193
Min
0
Max
779

UA 4840 On-Time Performance Details

Overall Rating
1.6 of 5
Average
Percentage On-Time 78%
Average Delay Time 138.23529411764707 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.6 shows that this flight has on-time performance characteristics better than 30% of all other flights in the FlightStats database.
On-Time Performance Rating
3.1 of 5
Average
Percentage On-Time 78%
This flight has an on-time performance of 78%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 62% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 138.23529411764707 min
This flight has an average delay of 138.23529411764707 minutes with a standard deviation of 193 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.