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(UA) United Airlines 636 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(BTV) Patrick Leahy Burlington International Airport

Burlington, VT, US

On-Time Performance Chart

(using rounded numbers)
On-Time
36
61%
Late
11
19%
Very Late
3
5%
Excessive
8
14%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
59
Total Delays ( > 1 min )
33
Codeshares
0
Average Delay (min.)
30.484848484848484
Standard Deviation
29.9
Min
0
Max
150

UA 636 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 61%
Average Delay Time 30.484848484848484 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 33% of all other flights in the FlightStats database.
On-Time Performance Rating
0.1 of 5
Very Poor
Percentage On-Time 61%
This flight has an on-time performance of 61%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 1% of other flights.
Delay Performance
3.3 of 5
Average
Average Delay Time 30.484848484848484 min
This flight has an average delay of 30.484848484848484 minutes with a standard deviation of 29.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 66% of other flights.

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