KAYAK

KAYAK is a global travel meta-search engine headquartered in Stamford, Connecticut, owned by Booking Holdings (NASDAQ: BKNG). Founded in 2004 by Steve Hafner and Paul English, KAYAK aggregates results from hundreds of online travel agencies, airlines, hotel chains, car-rental companies, and cruise providers to help travelers compare prices for flights, hotels, cars, vacation packages, and cruises across a single interface. The company operates the KAYAK consumer brand, the HotelsCombined and Momondo meta-search brands, and KAYAK for Business, a corporate travel platform. KAYAK also runs a global Affiliate Network that lets publishers, content sites, and travel partners embed KAYAK search via co-branded search forms, iframes, deep links, and white-label search pages, with revenue share on redirected click traffic. KAYAK does not publish a self-serve public REST or GraphQL API for third-party developers; the consumer experience is delivered through its websites, native apps, voice integrations (Alexa, Google Assistant), and chat surfaces (Slack, Messenger). Programmatic access is limited to vetted partners under the KAYAK Affiliate Network and KAYAK Partner Network agreements, which typically expose XML/JSON feeds, deep-link builders, white-label search results pages, and conversion tracking — all gated behind a partner application process. There is no public OpenAPI specification, no published SDK, and no developer portal for KAYAK's underlying meta-search infrastructure.

KAYAK is profiled on the APIs.io network. Tagged areas include Travel, Meta Search, Travel Meta Search, Flights, and Hotels.

KAYAK’s developer surface includes privacy policy, terms of service, GitHub presence, YouTube channel, engineering blog, and 17 more developer resources.

🌐 Visit website 📡 Source on GitHub

12.4/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

TravelMeta SearchTravel Meta SearchFlightsHotelsCarsVacation PackagesCruisesAffiliate NetworkWhite LabelDeep LinksBooking Holdings

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 12.4/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 3.7 / 20

Operational Transparency 0.7 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/kayak-com: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

GraphQL 1

GraphQL schemas published by this provider.

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

Access & Security 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Learn 1

Tutorials, courses, talks, and written guidance

YouTube

YouTube

Operate 1

Status, limits, changes, and where to get help

HelpCenter

HelpCenter

Commercial 2

Pricing, plans, and the legal terms of use

Privacy

Privacy

Terms

Terms

Company 9

The organization behind the API

Website

Press

About

Careers

Twitter

LinkedIn

Facebook

Facebook

Instagram

Instagram

Blog

Blog

Scroll for all 9

Other 5

Properties that don't map to a standard resource type

Affiliates

Business

Parent

HotelsCombined

Momondo

Source (apis.yml)

aid: kayak-com
name: KAYAK
description: 'KAYAK is a global travel meta-search engine headquartered in Stamford, Connecticut, owned by Booking Holdings
  (NASDAQ: BKNG). Founded in 2004 by Steve Hafner and Paul English, KAYAK aggregates results from hundreds of online travel
  agencies, airlines, hotel chains, car-rental companies, and cruise providers to help travelers compare prices for flights,
  hotels, cars, vacation packages, and cruises across a single interface. The company operates the KAYAK consumer brand, the
  HotelsCombined and Momondo meta-search brands, and KAYAK for Business, a corporate travel platform. KAYAK also runs a global
  Affiliate Network that lets publishers, content sites, and travel partners embed KAYAK search via co-branded search forms,
  iframes, deep links, and white-label search pages, with revenue share on redirected click traffic. KAYAK does not publish
  a self-serve public REST or GraphQL API for third-party developers; the consumer experience is delivered through its websites,
  native apps, voice integrations (Alexa, Google Assistant), and chat surfaces (Slack, Messenger). Programmatic access is
  limited to vetted partners under the KAYAK Affiliate Network and KAYAK Partner Network agreements, which typically expose
  XML/JSON feeds, deep-link builders, white-label search results pages, and conversion tracking — all gated behind a partner
  application process. There is no public OpenAPI specification, no published SDK, and no developer portal for KAYAK''s underlying
  meta-search infrastructure.'
type: Index
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
position: Provider
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/kayak-com.png
tags:
- Travel
- Meta Search
- Travel Meta Search
- Flights
- Hotels
- Cars
- Vacation Packages
- Cruises
- Affiliate Network
- White Label
- Deep Links
- Booking Holdings
url: https://raw.githubusercontent.com/api-evangelist/kayak-com/refs/heads/main/apis.yml
created: '2026-05-25'
modified: '2026-05-25'
specificationVersion: '0.20'
apis: []
common:
- type: TrustCenter
  url: security/kayak-com-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/kayak-com-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/kayak-com-domain-security.yml
- type: Website
  url: https://www.kayak.com
- type: Affiliates
  url: https://www.kayak.com/affiliates
- type: Business
  url: https://www.kayakforbusiness.com
- type: Press
  url: https://www.kayak.com/news
- type: About
  url: https://www.kayak.com/about
- type: Careers
  url: https://www.kayak.com/careers
- type: Privacy
  url: https://www.kayak.com/privacy
- type: Terms
  url: https://www.kayak.com/terms-of-use
- type: HelpCenter
  url: https://www.kayak.com/help
- type: Parent
  url: https://www.bookingholdings.com
- type: HotelsCombined
  url: https://www.hotelscombined.com
- type: Momondo
  url: https://www.momondo.com
- type: GitHub
  url: https://github.com/kayak
- type: Twitter
  url: https://twitter.com/KAYAK
- type: LinkedIn
  url: https://www.linkedin.com/company/kayak
- type: Facebook
  url: https://www.facebook.com/KAYAK
- type: Instagram
  url: https://www.instagram.com/kayak
- type: YouTube
  url: https://www.youtube.com/user/KAYAK
- url: https://www.kayak.com/news/feed/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

KAYAK

Kin Score

GraphQL 1

KAYAK GraphQL API

Security Posture 3

Kayak Com Domain Security

Kayak Com Vulnerability Disclosure

Kayak Com Trust Center

Resources