Update 1 @ 9:38PM - Looks like this was a popular one. It appears it may be sold out. At least, I'm getting an 'outbound flight cannot be found' message on FlightCentre, and really expensive results on AirCanadaVacations.com now.

It looks like the very cheap flights to Costa Rica, Honduras, El Salvador, and Belize are back, but this time on Delta. They range from about $360 - $400 roundtrip after taxes!

Update: December 13th - The fare war to Central America appears to be over. Prices on all airlines look to be back up to the $700-$1000 range.
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There are some flights to Lima that are about 25% cheaper than they ever normally get from Calgary.

There's a huge fare war to Amsterdam (AMS) going on at the moment. You do see the occasional charter flight on Air Transat to Amsterdam that drops down to this level, but it's extremely rare to see nearly all the major airlines drop a price to Europe like this that affects such a large range of dates.

Update: I think the Christmas one might be sold out now. Just took a look. The cheap Jan/Feb/March/April flights are still there, but the Christmas one is gone.

There's a few reasons I like this deal. For starters, it involves 2 Scandinavian countries that rarely ever seem to budge from their expensive price tags.. It's also in June 2012, and it's pretty rare to see a deal to anywhere in Europe this far ahead of departure.

You may remember that back around Labour Day there were some ridiculously cheap flights to Los Cabos, Mexico.

It looks like Alaska Airlines just dropped the price of their flights to Seattle down to $267 roundtrip after taxes.