Marketed as the world's first metasearch network for travel, Kayak combines flight, hotel, car-rental, and package comparison across hundreds of partner sites with one of the largest deeplink and white-label libraries in the industry. The Kayak Affiliate Network monetizes through a mix of CPC, revenue-share, and per-event commission models, depending on partner type and traffic profile, with a 30-day cookie and a robust self-serve API. Kayak is a strong fit for travel publishers, comparison-content sites, deal-aggregator newsletters, and large editorial brands building original travel coverage. Application includes a brief profile review and approval typically lands within a few business days through the affiliates.kayak.com portal, with multiple integration options available.