http://www.aircanada.com/en/news/121016.html

We’re happy to announce that Canadian issued Interac Online is now accepted as a form of payment when you purchase air travel on the Canadian edition of aircanada.com.

Air Canada provides customers with a new direct payment option with the addition on Interac Online, to our existing Visa Debit facilities. Interac Online is safe and convenient, and allows for online payments direct from bank account. And because your payment is completed through the financial institution you know and trust, you have the assurance that your transaction is secure.

With the introduction of Interac Online, we’re working to expand the payment choices available to you.