ɪn ˈeɪpɹəl tˈuː θˈaʊzənd ɪlˈɛvən, kˈaɪæk ɐkwˈaɪɚd ˈɔːl ʌvðɪ aʊtstˈændɪŋ ʃˈɛɹz ʌv jˈɑː bˈoʊ vˈɜːtɹɪbˈʌnd ɛntwˈɪklʌŋ dʒˌiːˌɛmbˈiː ˈeɪtʃ, ɔːɹ jˈɑː bˈoʊ sˈɔftwɛɹ, ˈɑːpɚɹˌeɪɾɚ tʃˈɛkfiːlˌɪks, ɐ tɹˈævəl sˈɜːtʃ ˈɛndʒɪn ɪn ˈɔːstɹiə.
In April 2011, Kayak acquired all of the outstanding shares of JaBo Vertrieb-und Entwicklung GmbH, or JaBo Software, operator Checkfelix, a travel search engine in Austria.