Who Are the Kayak Founders
Kayak was co-founded by Steve Hafner and Paul M. English, two experienced technology entrepreneurs focused on travel search. Steve Hafner had previously built Orbitz and brought deep expertise in online booking infrastructure. Paul M. English, a serial founder and philanthropist, contributed product and engineering leadership before later founding other ventures. Together, they launched Kayak as a metasearch engine that aggregates fares from airlines, hotels, and other travel providers.
The company was originally backed by venture capital and positioned itself as a neutral comparison tool rather than a booking site. Early on, Kayak focused on crawling and indexing large volumes of travel inventory to help users compare prices across multiple providers. This approach allowed the platform to scale quickly and attract a large user base searching for flights, hotels, and rental cars.
Growth, Acquisition, and Public Listing
Kayak grew rapidly by expanding its coverage of airlines, hotels, and car rental partners worldwide. The platform introduced features such as price forecasts, flexible date searches, and deal alerts to help users find lower-cost options. As usage increased, Kayak became one of the most visited travel comparison sites, drawing millions of monthly searches.
In 2012, Booking Holdings acquired Kayak for approximately $1.8 billion, integrating it into its portfolio of travel brands. After the acquisition, Kayak continued to operate as a standalone brand while benefiting from Booking Holdings' global distribution and data resources. The company remains publicly traded under the ticker symbol KYAK on the Nasdaq stock exchange, and its financial results are reported in Booking Holdings' quarterly filings via the SEC EDGAR system.
Kayak's Current Role in Online Travel
Today, Kayak functions as a travel search engine within Booking Holdings, comparing prices across airlines, hotels, car rental agencies, and other providers. The platform uses algorithms and data aggregation to show users a wide range of options, helping them identify competitive fares and accommodations. Kayak also offers tools such as price alerts, trip planning features, and insights based on historical pricing trends.
The company's technology infrastructure supports large-scale data processing and real-time fare updates, allowing it to handle millions of queries daily. Kayak's search results include options from both major global airlines and budget carriers, as well as hotel chains and independent properties. By operating within Booking Holdings' ecosystem, Kayak benefits from access to extensive travel inventory while maintaining a distinct user interface focused on comparison and discovery as noted by Forbes.