Here's a kick in the pants. I booked a flight last week to San Francisco. There was a seat sale on Air Canada, $159 each way. By the time I was finished with surcharges, taxes and fees the bill went to $512.63 . . . Today I get an email from Air Canada announcing yet another summer seat sale, so I check it out. Exactly the same flights, are $159 on the way down and $139 on the way back. Here's the kicker, the final total after surcharge, taxes and fees is $512.13. The surcharge went up from $95 on the first ticket I actually booked to $115 on the later seat sale. What's the deal? Is this some kind of scam?