Check the Math on Air Fares

"Fly to London for $198!" The advertisement seemed too good to be true.

And it was -- once you factor in all the hidden taxes and fees.

For the last month, British Airways held a big off-season sale on travel to and from Europe, offering flights to London for as low as $198 roundtrip. The deal was so good, travelers were doing double takes looking for the catch. And of course, as with most sale fares, there were a number of catches -- taking advantage of the $198 roundtrip wasn't easy. ...