Cheapflights www.cheapflights.com Searches multiple airline and online travel sites.
Kayak www.kayak.com partially owned by AOL. A “comparison shopping” website. Searches multiple online travel sites. Prices are listed in decending order. The least expensive is first on the list. You will be directed to the actual travel site to book your trip.
Mobissmo www.mobissmo.com International focus. Includes Asia and the Pacific online travel resources.
Qixo www.qixo.com Includes Jet Blue, Spirit and ryan Air in search results. Charges $20 per reservation.
Sidestep www.sidestep.com Comparision shopping web site.
Travel Zoo www.travelzoo.com Discount travel deals from hundreds of online travel companies throughout the world.
