
(UA) United Airlines 577 On-Time Performance Rating
Date Range:
01-Jan-2026 to 28-Feb-2026
On-Time Performance Chart
(using rounded numbers)
On-Time
34
94%
Late
0
0%
Very Late
0
0%
Excessive
0
0%
Cancelled
2
6%
Diverted
0
0%
Delay Statistics
(Aggregate Arrival Delay Statistics for this Flight)
Total Flights Observed
36
Total Delays ( > 1 min )
1
Codeshares
0
Average Delay (min.)
5
Standard Deviation
0
Min
0
Max
5
UA 577 On-Time Performance Details
Other Stops for UA 577
Origin
Destination
Rating
(BOS) Boston Logan International Airport
Boston, MA, US
(IAH) Houston George Bush Intercontinental Airport
Houston, TX, US
3.5 Average
(DFW) Dallas Fort Worth International Airport
Dallas, TX, US
(IAH) Houston George Bush Intercontinental Airport
Houston, TX, US
3.6 Good
(EWR) Newark Liberty International Airport
Newark, NJ, US
(BOS) Boston Logan International Airport
Boston, MA, US
2.6 Average
(SFO) San Francisco International Airport
San Francisco, CA, US
(DTW) Detroit Metropolitan Wayne County Airport
Detroit, MI, US
0.7 Poor