In April 2017, Cancer Care Ontario is to introduce a lung cancer screening pilot for people at high risk.

From the Lung Cancer Canada website 

Cancer Care Ontario recommends using low-dose computed tomography (LDCT) to screen people at high risk of getting lung cancer through an organized screening program.

To get in touch with the program and for more information, download the CCO Lung Cancer Screening Program FAQs

Screening and Early Detection Portfolio
The Screening and Early Detection Portfolio at the Canadian Partnership Against Cancer works with partners across the country to increase the number of individuals getting screened appropriately and ensure cancer screening services are of high quality.

In response to emerging evidence suggesting screening a high-risk population for lung cancer may reduce mortality associated with the disease, the Pan-Canadian Lung Cancer Screening Network (PLCSN) was established in 2012.

The Network brings together key stakeholders from across the country to promote active engagement and serves as a national platform for knowledge exchange. The PLCSN has a mandate to support initiatives that will inform discussions and decisions around lung cancer screening; to leverage expertise in this area; and to make use of evidence-based recommendations that support policy and best practices in lung cancer screening.

See below for a variety of resources related to lung cancer screening.
http://www.cancerview.ca/PreventionAndScreening/LungCancerScreeningPage/