Yes, last year there was a company called Jetsgo Airlines that was selling tickets (very restrictive) for a dollar one way when you bought the return ticket at the regular fare. Unfortunately with crazy promotions like that they went bankrupt and left a lot of people stranded.
Although tickets are no longer $1 since Jetsgo went bankrupt, the airlines now operating in Canada are very solid (and prices are based upon being both competitive and profitable).
Please keep in mind that Cheap Tickets Canada.com has met strict licensing requirements and as a result any purchase you make with us is insured through the BPCPA which means your purchase is insured through the Business Practices and Consumer Protection Authority of British Columbia. All individuals who purchased Jetsgo tickets with Cheap Tickets Canada no matter where you are from, qualified for refunds on their Jetsgo tickets.
More information on the benefits of booking with Cheap Tickets Canada who is licensed through BPCPA can be found at:
http://bpcpa.ca/Consumers/help/consumers-help-travel-services.htm