KAYAK doesn’t sell travel itself. Instead, it searches airlines, online travel agencies, and hotel sites at once and shows the options in one place, with filters for price, stops, airlines, and times. When you pick an option, it sends you to the provider to book. This saves time compared with checking many sites individually, and the interface offers flexible date grids and nearby airport searches to find cheaper alternatives.
Several tools help with timing and decisions. Price alerts notify you when a fare changes, and forecasts indicate whether prices are likely to rise or fall, so you can choose between booking now or waiting. KAYAK also offers trip planning, a Trips organizer for itineraries, and filters for things like total cost including bag fees. Conversational AI search lets you describe a trip in plain language and get suggestions.
KAYAK is free to use and earns money from referrals and advertising. Because bookings happen on other sites, customer service for changes and cancellations goes through the booking provider, which can be frustrating with third-party agencies. Forecasts are predictions, not guarantees. Google Flights is a strong free competitor with a clean interface, Skyscanner is a major meta-search engine, Hopper focuses on predictions, and Expedia and Booking.com sell travel directly.