Kayak

The KAYAK Affiliate Network bills itself as the world's first meta-search affiliate network specialized in travel. Instead of paying out only on completed bookings, it lets publishers earn through clicks, bookings and ad revenue across flights, hotels, cars and vacation packages. Because KAYAK is part of Booking Holdings, joining the network also gives affiliates access to sibling brands HotelsCombined, Momondo and Cheapflights from a single platform.

About KAYAK

KAYAK is a global travel metasearch engine headquartered in Stamford, Connecticut, and owned by Booking Holdings (NASDAQ: BKNG). Rather than selling travel directly, KAYAK aggregates prices from hundreds of travel sites so users can compare flights, hotels, rental cars and packages in one place. The company reports powering more than 6 billion annual travel searches, giving it significant scale and strong brand recognition among travelers.

The affiliate arm — the KAYAK Affiliate Network — packages KAYAK's search technology into products publishers can embed: deeplinks, widgets, a search box, whitelabel travel experiences and an API. That range means the program can suit anything from a single travel blog post to a full white-labeled booking experience on a partner site.

How the KAYAK affiliate program works

The program is application-based rather than open self-signup. According to the official site, the process runs in a few steps:

• Apply to join at affiliates.kayak.com, telling KAYAK about your business and how you plan to use the products so they can confirm the best way to work together.
• Get approved and log into the Affiliate Portal to manage your account, integrations and reporting in one place.
• Choose the right products — Deeplinks, search boxes, whitelabel or APIs — to match your use case.
• Integrate KAYAK into your website, content, apps and campaigns.
• Grow traffic and revenue, earning through clicks, bookings and ad revenue while tracking performance in affiliate reports.

On commission specifics, KAYAK's own pages do not publish a headline rate, cookie duration, payout schedule or minimum payout. Several third-party directories cite figures such as "up to 50% commission" and "no minimum payout," but these are not confirmed on KAYAK's official site, so treat them as unverified. Prospective affiliates should confirm exact terms directly with KAYAK — the site invites contact at partnerships@kayak.com and offers optional free access to Sandbox APIs during the application.

Who should promote KAYAK

KAYAK is a strong fit for publishers who already reach travelers with genuine booking intent:

• Travel bloggers and content sites reviewing destinations, flights and hotels, who can drop in deeplinks naturally.
• Comparison and deals sites that want an embedded search box or widget to keep users on-site.
• App and product builders who need an API or whitelabel to power a full travel search experience under their own brand.
• Larger media partners that can drive high volumes of searches and benefit from click and ad-revenue monetization, not just booking commissions.

Because the model rewards clicks and ad revenue as well as bookings, publishers with high traffic but lower direct-conversion rates can still monetize — an advantage over pure cost-per-booking programs.

Pros and cons

Pros

• Access to four major travel brands (KAYAK, HotelsCombined, Momondo, Cheapflights) through one platform.
• Multiple monetization levers: clicks, bookings and ad revenue.
• Flexible integration options — deeplinks, widgets, search box, whitelabel and API.
• Strong brand trust and massive search volume (6B+ annual searches).
• Dedicated affiliate support team and a reporting portal.

Cons

• No publicly stated commission rate, cookie window, payout method or minimum — key terms are only revealed after applying.
• Application and approval required; not an instant self-serve signup.
• Third-party "up to 50%" claims are unverified against official sources.
• Metasearch commissions in travel can be modest per action, so volume matters.

Overall, the KAYAK Affiliate Network is a credible, well-established option for travel-focused publishers, especially those wanting embedded search or API-driven experiences alongside standard affiliate links. The main friction is transparency: you'll need to apply and speak with KAYAK's partnerships team to confirm the commercial terms before you can properly model your earnings.