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(UA) United Airlines 4188 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(PVD) Rhode Island T. F. Green International Airport

Providence, RI, US

On-Time Performance Chart

(using rounded numbers)
On-Time
1
33%
Late
0
0%
Very Late
1
33%
Excessive
0
0%
Cancelled
0
0%
Diverted
1
33%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
2
Total Delays ( > 1 min )
2
Codeshares
2
Average Delay (min.)
18
Standard Deviation
22.6
Min
2
Max
34

UA 4188 On-Time Performance Details

Overall Rating
2.2 of 5
Average
Percentage On-Time 50%
Average Delay Time 18 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.2 shows that this flight has on-time performance characteristics better than 43% of all other flights in the FlightStats database.
On-Time Performance Rating
0.9 of 5
Poor
Percentage On-Time 50%
This flight has an on-time performance of 50%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 18% of other flights.
Delay Performance
3.5 of 5
Average
Average Delay Time 18 min
This flight has an average delay of 18 minutes with a standard deviation of 22.6 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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