The website says, “Kayak is a travel search engine. We search hundreds of travel sites from all over the world, provide the information in an easy-to-use display and send customers directly to the source to make their purchase.”
If you are looking for the right flight, hotel, cruise, or rental car, then look no further than Kayak. Once you make your choice, Kayak will link you to the travel sites to make your purchase. From what I can see, the website gets info from Orbitz, Travelocity and Priceline. You can also sign-up for alerts when prices or specials occur.
1. Search 140+ travel sites at once
2. Compare results from all sites together
3. Buy direct from airlines or agencies
4. Kayak is free!