The sale is expected to be announced with Bombardier's earnings on Thursday, the person said, asking not to be identified because of the sensitivity of the matter.
Bombardier and Viking could not immediately be reached for comment.
The sale was reported earlier by specialist aviation publication The Air Current.
It comes months after Bombardier completed the disposal of its loss-making CSeries jet program to Europe's Airbus, which renamed the aircraft A220.
(Reporting by Allison Lampert, Writing by Tim Hepher; Editing by Gopakumar Warrier)