20% off sale between US 48 states and Canada

American Airlines is offering 20% off flights between the lower 48 US states and the following Canadian cities: Halifax, Ottawa, Calgary, Vancouver, and Toronto, until Monday. Use promo code DFGHOST when booking on www.aa.com. Travel Oct 29 to Nov 14 only, and please note that all advance purchase restrictions apply, meaning that you'll get the lowest fares if you start your travel 14 days ahead of date of purchase on most fares. We found, for example, Boston to Vancouver for $485 RT, a savings of $118, departing on Nov 9 and returning Nov 14, and, same dates of travel Vancouver to Miami for $621 RT, saving $151 RT. Obviously, if another airline has fares more than 20% lower than American's, you'll want to go with that airline. This sale ends on Monday Oct 29.