Because we're signed up for fare alerts directly from Air Canada, we learned about this 15% discount deal. The promo is valid for travel through May 31, 2009. This discount is available in economy as well as premium cabins, for both intra-Canadian and international routes.
So what this means, in case it's not obvious, is that every Air Canada fare you see on Kayak, Orbtiz, or those fare comparison and fare drop alert sites is 15% higher than it could or should be, at least for travel through May 31.
It continually amazes me that our media friends have not caught onto the fact that there is no incentive for a site like Kayak or Orbitz to alert their users to these promo code deals. These deals can only be booked on the airlines' own web sites by plugging in the promo code into the promo code box, and therefore the online travel agencies and meta search engines cannot monetize them.

thanks
I am flying from Toronto to Hong Kong (leaving the end of Feb to the mid/end of March). Just wanted to know if there are any promo codes that I could use? Thanks for your help!!!
Gary
I want to travel within Canada (From Toronto to Saskatoon) in February. Does anyone know of any promo codes that I can use?? Thanks so much!!!!
Lindsay :)
Basically people need to do some shopping around and check your web site for coupon codes, or even Google coupon codes to see what's out there, it's amazing what is there. I always search for coupon codes when doing rental cars, try to find the cheapest rates on kayak and a few other web sites, check previous won bids at www.betterbidding.com and www.biddingfortravel.com then start bidding on Priceline. Sometimes I can find a coupon code that offers a better deal, but usually Priceline beats them all the time [tho I usually book last second since it's non-refundable].
Happy New Year to you too, hopefully 2009 will be a year of record low airfares, I love to fly!
Happy new year! Thanks for your thoughtful comment. Sorry that I didn't make myself clear. My only concern is to save people money on airfare, regardless of the source. I sincerely believe that the best airfare deals we find day to day are the promo code sales that are increasingly being launched by the airlines, directing traffic from the consumer directly to the airlines' sites, with absolutely no middleman.
Whether that middleman is Travelocity or Kayak or any other site is irrelevant. So I am only trying to alert consumers to the fact that they should sign up for the airline's promotions and frequent flyer programs (or just look at our blog, since we list them all as soon as we find them--although as you point out, some promo codes are individually generated, so it's best to sign up) because otherwise they will end up paying more than they need to for air travel.
Whether it's the recent 50% off promo codes on Southwest to/from Las Vegas, Buffalo, New Orleans, Denver, and Salt Lake City; or Virgin's 2 for 1 deal systemwide, or JetBlue's frequent 10% or $30 off deals, or Airtran's recent $25 off deal, or Spirit's $9 fare club deals, or the fact that Singapore Airlines sometimes sells LAX to Tokyo on its own site for less than it would be listed on Kayak (Kayak does not list that fare because you'll only see it if you start your search from a specific page at singaporeair.com), or this recent 15% off Air Canada deal.... the point is that the airlines are not sharing these fares with Kayak or Orbitz or any other middleman.
Therefore, if the airline sites have significantly lower fares, it can be argued that consumers are overpaying if they book their fares any other way.
Kayak is an excellent place to start a search, so instead of discouraging your readers from searching multiple web sites, you guys should start listing the best web sites to use. Also, ITA Software is great for finding airfares directly from the airlines, plus Priceline for purchase since they lack a booking fee, although trying on the airline's web site is best since there are deals like the one you mention here.
Please guys, post something about booking tickets so people understand these things. It's pretty clear given how confused people are at booking one-way tickets etc that they find on here, that they are very confused.
@Matthew
I also think it's now been extended to Dec 28th.
Thanks for pointing this out!