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(UA) United Airlines 635 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-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
51
86%
Late
4
7%
Very Late
0
0%
Excessive
0
0%
Cancelled
4
7%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
59
Total Delays ( > 1 min )
9
Codeshares
0
Average Delay (min.)
12.444444444444445
Standard Deviation
8.7
Min
0
Max
26

UA 635 On-Time Performance Details

Overall Rating
4.6 of 5
Very Good
Percentage On-Time 86%
Average Delay Time 12.444444444444445 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.6 shows that this flight has on-time performance characteristics better than 91% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 86%
This flight has an on-time performance of 86%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 97% of other flights.
Delay Performance
4.3 of 5
Good
Average Delay Time 12.444444444444445 min
This flight has an average delay of 12.444444444444445 minutes with a standard deviation of 8.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 86% of other flights.

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