Those tickets are probably gone. Maybe you might find 1 but it will involve a wicked connection.

Quickest route is to "buy" Aeroplan miles with Plat cards. The Amex Aeroplan card, $499 for 50,000, the TD Inf. Privilege, $399 for 50,000. Then the Amex gold for free 25,000. You'll have to spend a minimum of $2500 right away (minimum spend for the bonus).

You will have then spent $800 already. By the the the time the miles are posted it's now 90 days. Even if you do get a ticket or 2, it's in Y with long connections,add the taxes and fees to the $800 already spent and you'll be wondering why you went this route. Not to mention you still need 2 more tickets. And probably won't be on the same flight.