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(UA) United Airlines 635 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(BDL) Bradley International Airport

Hartford, CT, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
57
97%
Late
0
0%
Very Late
0
0%
Excessive
1
2%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
59
Total Delays ( > 1 min )
5
Codeshares
0
Average Delay (min.)
17.2
Standard Deviation
17.1
Min
0
Max
47

UA 635 On-Time Performance Details

Overall Rating
4.4 of 5
Good
Percentage On-Time 97%
Average Delay Time 17.2 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.4 shows that this flight has on-time performance characteristics better than 87% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 97%
This flight has an on-time performance of 97%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 100% of other flights.
Delay Performance
3.8 of 5
Good
Average Delay Time 17.2 min
This flight has an average delay of 17.2 minutes with a standard deviation of 17.1 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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