The August on-time report for North American carriers held about steady compared with July, increasing 0.5 percentage points to a weighted average of 72.1 percent, according to the latest monthly report from aviation analytics company Cirium.
WestJet had the highest average for the fourth consecutive month at 82.6 percent, but it was down 1.3 percentage points from July's average. Delta Air Lines had August's largest month-over-month increase at 4.2 percentage points for an on-time average of 79.2 percent. Third was United Airlines at 74.5 percent, down 0.9 percentage points from July.
Air Canada had the largest decline and was down 3.1 percentage points to an on-time average of 65.4 percent.
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WestJet again was the only North American carrier on Cirium's August global list of on-time airlines at fifth. Aeromexico was first with an on-time performance of 89.7 percent.
Southwest Airlines had the highest August completion factor at 99.2 percent, followed by Alaska Airlines at 98.6 percent and United at 98.5 percent.
The number of North American flight cancellations in August was 18,295 compared with 22,921 in July.
A flight is considered on time if the aircraft arrives at the gate within 15 minutes of its scheduled arrival time.
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