Wow check out this Eastern Canada ultra cheap deal~!! http://www.aircanada.com/en/offers/air/springpass/springpass.html
For the low price of $599 you can fly as much as you want for one month.  I do believe each flight would only cost the airport improvement fee/taxes after the initial $599 payment.  I wonder if this would be worth it.  I’ll be going to Toronto at the beginning of April as well as at the end.  And then I could also fly somewhere just for a weekend to visit Boston or Montreal or NYC or even Florida or Gander if I felt so inclined.