Environment Canada ended the wind chill warning that was in effect for Toronto and the GTA early on Wednesday morning.
Forecasters say wind chills are expected to finally ease off today across northern, southern and central Ontario.
While the cold may begin to subside, the delays at Pearson International Airport will continue.
On Tuesday, over 600 flights were cancelled after a ground stop was put into effect, which didn't allow any planes to land in Toronto.
Officials blamed the Minus-40 wind chill readings for affecting equipment and outdoor ground crews.
Air Canada says severe winter conditions in eastern Canada and the U-S northeast are still impacting its operations. As of 5 a.m. on Wednesday, 230 arrivals and 165 departures were cancelled.
Pearson International tweeted: "Morning start up will be slow this morning, but airfield is operational - pls check your flight status with your airline."
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