Although I did not receive an email about it, it seems WestJet has also just released a promo code with very similar booking terms to the Porter discount (though it says book by August 26 9:59 MT) The sample WestJet fare I used from Halifax to St. John’s now matches Porter’s at $230. I took a quick look at some fares – here are a few examples.
Fredericton – New York $316 Sept. 10-14
Moncton – Toronto $190 Sept. 30-Oct. 3
Halifax – Ottawa $247 Sept. 24-27
So, when one airline releases a discount, it’s a good idea to see if another one matches it.