Oh come on. Are you being serious?
There is virtually no justification for this. The airports are public owned operations that make money and invest in themselves. They are not a financial burden to the public like Canada Post. Even if they were, selling should be the last resort.
Selling them would mean they become profit driven. This ultimately means higher fees (we pay more) and lower expenses (job cuts).
History is the best teacher and this play of public-to-private usually, if not always. ends up bad for the people. Since Carney has lived in the UK, I'm sure he is aware of the London’s Heathrow airport failures. Why repeat this?