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(UA) United Airlines 398 On-Time Performance Rating

Date Range:

01-Apr-2026 to 31-May-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(KEF) Keflavik Airport

Reykjavik, IS

On-Time Performance Chart

(using rounded numbers)
On-Time
14
56%
Late
5
20%
Very Late
3
12%
Excessive
3
12%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
25
Total Delays ( > 1 min )
18
Codeshares
0
Average Delay (min.)
24.833333333333332
Standard Deviation
20.1
Min
0
Max
75

UA 398 On-Time Performance Details

Overall Rating
1.8 of 5
Average
Percentage On-Time 56%
Average Delay Time 24.833333333333332 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.8 shows that this flight has on-time performance characteristics better than 34% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 56%
This flight has an on-time performance of 56%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
3.5 of 5
Average
Average Delay Time 24.833333333333332 min
This flight has an average delay of 24.833333333333332 minutes with a standard deviation of 20.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 69% of other flights.

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