And now the Kayak app for iPhone makes it even simpler to book a trip.

Kayak is simple to use.

Just select Flights or Hotels, choose your trip dates on the calendar, and the app generates a list of flights (which can be sorted by price or length) and hotels (sorted by price, location, or “class”).

With just a few taps, Kayak finds the cheapest travel info available, saving tons of time usually spent scouring the web.

It’s easy to book online with Kayak, or even call the airline or hotel directly from your iPhone with one touch.

Kayak even lists hotels that aren’t available to reserve online. This app is fantastic for changing flights or booking a room at the last minute.