I'm looking to book flights for September 2013.
My dates are not flexible (have a choice between 2 dates because of school holidays) so I don't want to wait for the last minute.
I've been following the flights on Kayak for the past two months and now I found a really excellent price (291 USD).
When I went to airline's site, The flight was priced at 500 USD.
Other sites: expedia, orbitz, travelocity, cheaptickets - had the flight priced at 357-555 USD.
How can Kayak be so much cheaper than anybody else?
Kayak's recommendation was to buy now (at 58% certainty).
looking at similar flights in 2012 I know that a "good" price is around 350-400 USD.
Should I buy from Kayak now? What are the risks?