FlyPorter.com are offering yet another discount -- this time it's 40% off base fares when you book by Tuesday, August 21. Just use the promo code RELAX when booking any Porter flight. Travel must be completed before December 14.

Porter flies out of Toronto, Halifax, Montreal, Moncton, Mont Tremblant, Sudbury, Ottawa, Quebec City, St. John's, Windsor, Timmins, Sault Ste. Marie and Thunder Bay as well as the US cities of New York, Myrtle Beach, Boston, Burlington, Washington-Dulles and Chicago.

Note: Sale prices may not be available on all flights. Offer valid until 11:59PM on August 21.