The government says it is reviewing how it handles tickets that were obtained by fraudsters using fake online travel portals.
Airline employees are not required to register their flights or check in to an airport, so fraudsters have been able to obtain fake tickets and use them to fly.
The government has issued warnings to airlines about the issue.
Air Canada and WestJet have issued alerts, and Bombardier said it was “conducting a thorough review” of its procedures.
The Federal Aviation Administration said last month that it is taking a “close look” at the issue and is expected to release a final rule in about a month.
It said it would consider recommendations from the agency.
With files from The Canadian Press