Probably one of the most useful features of Kayak is explore. This is a useful device when looking for EF or just some bargains.Kayak - unlike GF - shows prices for (all?) Asian LCCs, and also has a very good car rental search. Yesterday, thanks to Kayak, I saved 25e on renting a car in April (Keddy by Europcar was shown, while Argus and AutoEurope were not).I agree that OJ, DOJ and more complicated Kayak routes work poorly, and often not at all.
