Canada’s two biggest airlines are ranking poorly in the category of on-time performance this year.

Aviation analytics company Cirium has published data revealing that among the 10 biggest airlines in Canada and the United States, Air Canada and WestJet ranked worst and second-worst for their punctuality.

The report says Air Canada had on-time arrivals (meaning within 15 minutes of the schedule) for just under 56-percent of its roughly 143,000 flights as of mid-December.

WestJet managed on-time arrivals for just under 61-percent of its roughly 89,000 flights.

Delta Airlines is ranked first with on-time arrivals for about 84-percent of its 960-thousand flights.

The data does not include the latest travel woes this past week caused by major winter storms across Canada and the U.S.