KAYAK: Compare Flight, Hotel, and Rental Car Prices Across Hundreds of Sites at Once

KAYAK is a travel search engine that checks hundreds of airlines, hotel booking sites, and car rental companies at the same time and shows you the results side by side. Instead of visiting Expedia, then Delta.com, then United.com, then Hotels.com one at a time, KAYAK does all of that searching for you in a matter of seconds.

The key thing to understand about KAYAK is that it is a search tool, not a booking platform. When you find a price you like, KAYAK sends you directly to the airline or hotel website to complete the purchase. This means you are always buying from the original source, which makes managing changes or cancellations easier.

KAYAK's price alerts are one of its most useful features. You can tell KAYAK to monitor the price of a specific flight route and notify you by email or phone notification when the price drops. This is helpful if you are planning ahead and willing to wait for a better deal rather than booking immediately.

The KAYAK Explore tool is great for flexible travelers. Instead of searching a specific destination, you can enter your departure city and a budget, and KAYAK will show you a map of places you could fly to within that price range. This is a fun way to discover travel options you might not have considered.

KAYAK also includes a "Price Forecast" feature on flight searches that uses historical data to predict whether current prices are likely to go up or down in the coming days. This can help you decide whether to book now or wait a little longer.