TORONTO — Just when we thought winter’s worst was over, another blast of icy weather has swept into Toronto, causing gridlock on the streets and possible flight cancellations and delays.

Air Canada has reported that several flights may be impacted by forecasted winter operational conditions for today and tomorrow, including those flying to, from and connecting through Bagotville, Kingston, Montreal, North Bay, Ottawa, Quebec City, Rouyn-Noranda, Sudbury, Toronto, Val d’Or, Baie Comeau, Charlottetown, Fredericton, Gaspe, Isles de la Madeleine, Moncton, Mont-Joli and Saint John.

WestJet has issued a freezing rain warning for Southern Ontario for today, and advises all passengers travelling to or from this region to check the status of their flights prior to leaving for the airport.

Travel advisory – S. Ontario https://t.co/dfFNsX6rkp Freezing rain may cause delays or cancellations. #stormTO pic.twitter.com/MkmqGW9TCh

— WestJet (@WestJet) March 24, 2016

Porter has also issued a weather advisory for Toronto (YTZ), Montreal and Ottawa today, saying that “in the event that schedule changes occur, we will accommodate affected passengers, providing updated flight information via email as soon as it is available.”