This site should only be used as a search engine. After you find your "Deal", you should log off Kayak and log onto the site Kayak suggested. I have used Kayak for over 5 years, spending most of my time in the air, in a rental cars, and hotels.
After being a loyal customer of Kayak, let me share my recent and last trip booked through Kayak.
I travel to Australia 2 to 3 times a year. My last flight booked to Australia, through Kayak, was booked in early March to leave LAX to Sydney on Oct 2nd
The 3rd of September Kayak contacted me to let me know that my Flight was over sold BY 300 PEOPLE and I was going to be switched to a flight leaving three (3) days earlier, changing me from a VAustralia flight to a Delta Flight.
Kayak then informed me that because they are a "third party", there was NOTHING THEY COULD DO TO HELP.
If I would have spent the few extra dollars directly with my chosen Airline, I would have been fine.
Neither Kayak or the website they sent me to were willing to help in anyway.