Which airfare search site is the most comprehensive?

An airfare search engine which searches multiple dates, multiple airlines and multiple airports at once?

• Im always changing the dates and changing the airports to try to get the cheapest ticket. Is there a search engine which do all this for me?

• Answer:

  http://www.bookingbuddy.com or .co.uk will do that for you. Just put in your cities and dates 1 time, then click the sources you want it to check. It covers Kayak, Orbitz, Cheaptickets, airlines direct, consolidators, etc. etc. Also, be aware that some airport codes search multiple airports in 1 go. NYC searches flights using Newark, JFK, and LaGuardia; CHI searches O'hare and Midway; LON searches Heathrow, Gatwick, Stansted, Luton, and City; WAS searches Dulles, National, and BWI -- for example. You might also like http://matrix.itasoftware.com/cvg/dispatch/prego/calendar which allows you to search over an entire month. And, you can stack departure and arrival cities with semicolon and no spaces. For example, from LAX;BUR;ONT;LGB;SNA to NYC;PHL;HPN;ISP It doesn't do as well if you stack too many; 5 is about the most, otherwise it sometimes will miss a good fare. ITA does not sell, but it quickly sniffs out the cheapest travel dates over a month, based on how long you need to stay, so then you can take those cities and dates to Bookingbuddy to nail it down and book. Finally, http://www.farecompare.com/maps/compareDestinations.html is a really cool tool for searching best fare over all dates for an upcoming year, covering all airlines (except some low-cost airlines like Southwest, Allegiant, Ryanair, etc.), and the cheapest airports from the city you type in.