Canada, Flights, Sale, WestJet WestJet on Sale – up to 40% OFF! July 27, 2007 Canadian Rockies Blogger Leave a comment Save up to 40% OFF WestJet travel! Book now! Book by August 1, 2007 for travel in Canada between September 5 and October 31, 2007 on Tuesdays, Wednesdays, and Saturdays. U.S. flights are also on sale! Visit WestJet for details!