This is the best summary I could come up with:

The country's biggest carrier landed 63 per cent of its flights on time last year, placing it last among the continent's 10 largest airlines, according to Cirium, an aviation analytics firm.

Comparably, a ranking of European counterparts placed Dutch carrier KLM in the 10th spot with a score of 76 per cent, 13 points higher than Air Canada.

John Lawford, the executive director and general counsel of the Public Interest Advocacy Centre (PIAC) in Ottawa, said that the on-time percentage metric is one that matters a lot to consumers.

The Canadian Transportation Agency (CTA), an independent regulatory body that mediates and resolves disputes between airlines and passengers, has been working through a backlog of complaints.

He also acknowledged that high load factors — when all planes are almost fully booked — result in more "spilling traffic" when flights are cancelled, as passengers scramble to rebook with competitors and may arrive hours or days later than planned.

That outcome stood in contrast to the tales of travel nightmares from 12 months earlier, when thousands of passengers saw their flights delayed or cancelled, largely due to poor weather.

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