1. For the best airfare, look beyond the most known online travel sites like flybudget.com. You may know about JetBlue and Southwest, but how about Snowflake, Jet2, Metro-Jet or Zip? When flying in the US, some of the least expensive flights are available on the smaller airlines which are subsidiaries the major airlines.

2. Airlines usually reload their computers at midnight, so this is a good time to shop online for low cost seats that might have reserved but not paid for.