Travel Search Engines Reviewed
http://www.farechase.com
Pros: Searches premium-class and one-way tickets and fares.
Cons: Does not search for multi-segment itineraries; does not support internet explorer.
Itasoftware.com
Pros: Searches premium-class and one-way multi-segment tickets; flags overnight flights, airport changes, tight connections and long layovers
Cons: Must book through a travel agent.
Kayak.com
Pros: Searches flights to and from nearby airports; automatically saves previous searches; speedy.
Cons: Does not search for premium-class fares or multi-segment itineraries; simply links you to ticket seller's web site, which means you have to enter itinerary again from scratch.
Mobissimo.com
Pros: Searches premium-class fares and flights to and from nearby airports; offers the option to save searches.
Cons:Does not search for multi-segment itineraries; fares posted for premium class are often really for economy class.
Sidestep.com
Pros: Searches flights to and from nearby airports; a clever feature allows you to sort by price, number of stops, airline, time of departure, and airport
cons:No option to search for premium class fares or for multi-segment itineraries; the slowest of the travel search engines we tested.
