KAYAK searches hundreds of travel sites to show you your options and let you pick what works best for your trip. Track prices, set a budget, build your itinerary and more.  What’s in our app. Double check prices, no matter where you found it: KAYAK PriceCheck lets you upload a screenshot of a flight deal from any site, and we’ll search hundreds of sites to see if we can find a better deal. Get the flight you want: Compare flight options from hundreds of sites then zero in on the best one fo