Contrarian's aviation guru, Adrian Noskwith, thinks the Porter Airlines 50%-off sale may have played a role in the weird pricing I encountered flying from Toronto to Sydney (as Joe MacKay argued), but it's not the whole story. Airline pricing is a weird science at the best of times. When Porter is whipping Air Canada's ass out of Toronto Island, as they are at the moment, this drives airline pricing executives to do even weirder things. But why is it consistently cheaper to fly from Sydney to St. Johns (via Halifax) than from Sydney to Halifax? To check this claim, I priced one-way Air Canada...

Contrarian needed to make a reservation yesterday from Toronto to Sydney. The fact I had to get all the way to Sydney meant I couldn't use Porter Airlines' magnificent service from Toronto Island Airport. Porter is the upstart airline known for its curious, retro habit of treating passengers as welcome guests. Leaving from the Island Airport avoids the time and money wasted getting to and from unspeakable Pearson. So I made a quick check to see if Air Canada could accommodate me from Toronto Island. To my astonishment, I found the following: $219.36 is an almost unheard of low fare. As I snapped...