I've used one of the travel companies that kayak redirect you: I got robbed $1053USD. The company that associates to steal with Kayak is Smartfares.com, they took my money, don't give any airline confirmation number and don't want to give me my money back.I've contact Kayak and they didn't response any of my emails, Kayak just doesn't care if you are robbed.Be warned: you will get robbed if use any of Kayak associates to buy a ticket, instead go directly to the airline web page.