The 21.0 version of Kayak Flight, Hotel Search for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program is included in Lifestyle Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This free software for Mac OS X was originally designed by kayak.com.
From the developer:
Kayak for the iPhone connects to kayak.com, the best travel search engine in the world. Find airfares and hotel prices quickly, for free! Why pay for looking up airfares when Kayak gives it to you for nothing?
Use Kayak for changing your flight at the airport, or finding a hotel at the last minute.
You may want to check out more software for Mac, such as Teddy Floppy Ear - Kayaking, Hotel or Brightstone Mysteries: Paranormal Hotel, which might be related to Kayak Flight, Hotel Search.
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