WestJet is having another seat sale!  Here are some details: 

Book by August 19 for travel on Tuesdays, Wednesdays, Thursdays and Saturdays for travel between September 7 and December 15, 2010 for flights within Canada.

Book by August 19 (11:59 p.m. MT) for travel until December 15, 2010. For U.S.destinations travel on Tuesdays, Wednesdays and Thursdays. For international destinations travel on Mondays, Tuesdays, Wednesdays and Thursdays.

Looks like there are some great prices!  Click here to book your WestJet flight!