Los Angeles: Firefighters from provinces across Canada have volunteered to give up Christmas with their families and fly to Australia to help with the bushfire crisis.

The crack team has answered Australia's call for help during what's expected to be one of the country's worst bushfire seasons on record.

Australian officials submitted an official request to the Canadian Interagency Forest Fire Centre, based in Winnipeg, on Friday and on the weekend, with dozens of experienced firefighters in different provinces preparing to give up Christmas and fly to Australia.

Almost 1200 firefighters are tackling large bushfires on the NSW mid-north coast among scores of blazes around the state. Credit:AAP

Firefighters will gather in Vancouver on Tuesday before flying to Sydney for an expected 38-day deployment.