North American carriers’ average on-time performance in July slipped for the second month in a row, dropping 2.3 percentage points month over month to 65.8 percent, according to Cirium’s monthly report. In June, the month-over-month decline was more than 10 percentage points.
Alaska Airlines remained in the top spot at 82 percent on time and was one of only two carriers to show a month-over-month improvement. The other was Frontier, which increased 0.9 percentage points to 57.2 percent. Fronter was one of three carriers with on-time performance metrics below 60 percent. The other two were JetBlue, which also had the largest month-over-month decline—9.5 percentage points—bringing its on-time performance to 53 percent, and Air Canada (51.3 percent).
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Delta Air Lines at 78.6 percent was the only North American carrier to make the global on-time performance list, at ninth. It had been eighth in June and second in May.
North American airlines in July canceled 21,131 flights, a 21.3 percent increase over June’s 17,414 cancellations.
Alaska also had the highest completion factor at 99.7 percent, followed by Southwest Airlines at 99.1 percent.
A flight is considered on time if the aircraft arrives at the gate within 15 minutes of the scheduled arrival time.