Late at night is usually when airlines load new fares and discount existing ones.

I believe there's a lot of great marketers out there who know how to package things. Are these goodies that you want and need to pay for. Or is it bells and whistles that you don't need?

When you're sick, do everything you can to avoid getting on a plane. I've boarded with what felt like the beginning of the flu, and landed hours later with a full-blown illness -- fever, chills, head pain.

Basically, the Web presents travel vendors with an opportunity to sell their product at a lower cost. If they can sell it at a lower cost, they can also pass on those savings to the consumer.