As we've said before, you can often save a lot of dough by booking fares directly on an airline's site rather than on Kayak or Travelocity. Here's a good example where you'll save about $100 on a spring trip from New York to Nice, France. Thanks to reader Ryan for pointing this route and fare out to us. You'll find other examples at aerlingus.com.
Here's the fare on Kayak.com at $764 RT:
and here it is on Aerlingus.com at $673 RT including tax:
Now, we're not saying that Kayak or Travelocity or Orbitz are bad sites. Not all all. We're just saying that the airlines can sell fares for any price they want, and they are not required to share those prices with the online travel agencies or meta search engines or with compturized airfare databases such as those provided by ITASoftware or ATPCO (the Airline Tariff Publishing Company).