Visually that kind of interface is very appealing, but fares may be misleading... once you start the booking process, you will end up with completely different

Visually that kind of interface is very appealing, but fares may be misleading... once you start the booking process, you will end up with completely different numbers. Typically, a featured "as low as $" air fare is a red eye, 8 hour connection time etc. I was going to output specials myself too, but then commented them out - as they hardly ever apply. That being said, Kayak does have a great UI, and their iOS apps are eye candy.