TORONTO, Ont. – Snowfall in parts of Ontario has prompted flight cancellations and caused headaches for motorists Thursday.

Nearly 10 centimetres of snow fell in Toronto by early Thursday — the largest snowfall recorded for the city since March 2011, according to CityNews weather specialist Sangita Patel. According to Environment Canada, downtown Toronto received 15 centimetres of snow.

Peter Noehammer, the city’s director of transportation services, said there are 600 road plows and 300 sidewalk tractors in use.

Environment Canada issued a winter storm warning for southern and eastern Ontario late Wednesday.

Over 70 flights have been cancelled or delayed as of Thursday morning at Pearson International Airport. Ten centimetres of snow had fallen there, Environment Canada said.

Travellers are urged to check their flight status before heading to the airport.

The Canadian Automobile Association reported a 45-60 minute wait for service. The association fielded 1,900 calls as of Thursday morning.

“We do service high-priority calls first so those are the drivers who are stranded out on the road, involved in a collision,” said CAA spokeswoman Silvana Aceto.

The CAA advises motorists to drive with extra caution by slowing down and giving themselves extra room between vehicles.

“Make sure to slow down, I can’t stress that enough.”

“Slow down, drive according to those road conditions.”