[4] Kayak's website and mobile apps are currently available in about 20 languages and 30 countries, including the United States, the United Kingdom, Canada, India, China, France, Germany, Italy, Spain, Russia,[5] Switzerland, Norway, Sweden, Finland, the Netherlands, Australia, Ireland, Mexico, New Zealand, Belgium, Korea, Japan, and Singapore.

[17] In September 2013, Kayak announced an office move to the Harbor Point district of Stamford, aided by a $2.5 million loan from the state of Connecticut.

[24] Mashable included Kayak in first place for the website's list, "10 Budget Airfare Tools Every Traveler Should Know in 2012".

[33] In December 2011, Kayak announced that it would not renew a contract to advertise on the TLC reality television show All-American Muslim.

The decision followed a campaign by the Florida Family Association, a one-man fundamentalist organization focused on “defending American values".