aid: heathrow-airport url: https://raw.githubusercontent.com/api-evangelist/heathrow-airport/refs/heads/main/apis.yml name: Heathrow Airport kind: company humanURL: https://www.heathrow.com/ description: Heathrow Airport Limited operates London Heathrow (IATA LHR, ICAO EGLL), the United Kingdom's principal international hub and Europe's busiest airport by passenger numbers, under the ultimate ownership of FGP Topco Limited - whose largest shareholder since December 2024 is Ardian, alongside Saudi Arabia's Public Investment Fund and a residual Ferrovial holding. In the travel distribution chain Heathrow is infrastructure, not an intermediary - it sells no seats, holds no bookable inventory, issues no PNRs or e-tickets, and sits entirely outside the GDS and IATA NDC value chain, earning aeronautical charges, retail concessions, car parking and property income instead. Its API posture is unusual for an airport - Heathrow does run a real, branded, publicly reachable developer portal at developer.heathrow.com, built on Microsoft Azure API Management, which publicly describes three products in prose - Flights, Flight Connections and Weather - but publishes no OpenAPI, no endpoint reference, no rate limits, no pricing and no SLA to anonymous visitors. The API catalogue and Products list return empty to unauthenticated callers, sign-in is via Azure Active Directory, and the portal's own How It Works page requires a prospective developer to email support@heathrow.com and be enrolled before any access is granted. The gateway at api.heathrow.com goes further and rejects requests with "400 No required SSL certificate was sent", meaning mutual TLS with a Heathrow-issued client certificate. So - public docs, gated contracts, no exit path beyond a UK GDPR data portability request to privacy@heathrow.com. accessModel: pricing: unknown onboarding: application-approval trial: false try_now: false public: false label: Documented APIs ยท Enrolment and Azure AD account required confidence: high source: - developer-portal - terms generated: '2026-07-28' method: probed image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg tags: - Travel - United Kingdom - Airports - Aviation - Airport Infrastructure - Flight Information - Transportation - Passenger Experience created: '2026-07-28' modified: '2026-07-28' specificationVersion: '0.19' apis: - aid: heathrow-airport:heathrow-flights-api name: Heathrow Flights API description: Heathrow's Flights API provides up to date information on real time flights to and from Heathrow, covering destinations, arrivals, airlines, aircraft types, flight status, gates and terminals, with scheduled flight information enriched by real-time gate and terminal updates. Described publicly on the Heathrow developer portal; the endpoint reference and machine-readable contract are visible only to enrolled, Azure AD authenticated accounts. humanURL: https://developer.heathrow.com/api-flights baseURL: https://api.heathrow.com/ tags: - Flights - Flight Status - Arrivals - Departures - Aviation properties: - type: Documentation url: https://developer.heathrow.com/api-flights - type: DeveloperPortal url: https://developer.heathrow.com/ - type: Onboarding url: https://developer.heathrow.com/how-it-works - type: Authentication url: https://developer.heathrow.com/signin - aid: heathrow-airport:heathrow-connections-api name: Heathrow Flight Connections API description: Heathrow's Connections API provides up to date information on real time flight connections to and from Heathrow, returning connection information together with flight detail. The portal documents four query shapes - flight to flight, flight to terminal, terminal to terminal, and terminal to flight. Described publicly on the Heathrow developer portal; the endpoint reference and machine-readable contract are visible only to enrolled, Azure AD authenticated accounts. humanURL: https://developer.heathrow.com/api-connections baseURL: https://api.heathrow.com/ tags: - Connections - Transfers - Terminals - Aviation properties: - type: Documentation url: https://developer.heathrow.com/api-connections - type: DeveloperPortal url: https://developer.heathrow.com/ - type: Onboarding url: https://developer.heathrow.com/how-it-works - type: Authentication url: https://developer.heathrow.com/signin - aid: heathrow-airport:heathrow-weather-api name: Heathrow Weather API description: Heathrow's Weather API provides up to date information on weather conditions at most airports worldwide, exposing temperature, weather categories, a countries list and lookup of weather by IATA code, positioned as a companion to the Flights API for connection and arrival/departure context. Described publicly on the Heathrow developer portal; the endpoint reference and machine-readable contract are visible only to enrolled, Azure AD authenticated accounts. humanURL: https://developer.heathrow.com/api-weather baseURL: https://api.heathrow.com/ tags: - Weather - Forecast - Aviation properties: - type: Documentation url: https://developer.heathrow.com/api-weather - type: DeveloperPortal url: https://developer.heathrow.com/ - type: Onboarding url: https://developer.heathrow.com/how-it-works - type: Authentication url: https://developer.heathrow.com/signin common: - type: DomainSecurity url: security/heathrow-airport-domain-security.yml - type: Website url: https://www.heathrow.com/ - type: DeveloperPortal url: https://developer.heathrow.com/ - type: Documentation url: https://developer.heathrow.com/apis - type: Plans url: https://developer.heathrow.com/products - type: Onboarding url: https://developer.heathrow.com/how-it-works - type: SignUp url: https://developer.heathrow.com/signup - type: Authentication url: https://developer.heathrow.com/signin - type: ChangeLog url: https://developer.heathrow.com/api-changelog - type: Support url: mailto:support@heathrow.com - type: Company url: https://www.heathrow.com/company - type: FlightStatus url: https://www.heathrow.com/arrivals - type: TermsOfService url: https://www.heathrow.com/terms-and-conditions - type: PrivacyPolicy url: https://www.heathrow.com/privacy-notice - type: LinkedIn url: https://www.linkedin.com/company/heathrow-airport/ - type: GettingStarted name: How It Works - Heathrow API enrolment url: https://developer.heathrow.com/how-it-works - type: Blog name: Heathrow Media Centre url: https://mediacentre.heathrow.com/ - type: Authentication name: Authentication profile url: authentication/heathrow-airport-authentication.yml - type: Conventions name: API conventions url: conventions/heathrow-airport-conventions.yml - type: Conformance name: Standards conformance url: conformance/heathrow-airport-conformance.yml - type: Lifecycle name: API lifecycle url: lifecycle/heathrow-airport-lifecycle.yml - type: ChangeLog name: Changelog capture url: changelog/heathrow-airport-changelog.yml - type: Packages name: Client library search url: packages/heathrow-airport-packages.yml - type: WellKnown name: Well-known discovery probes url: well-known/heathrow-airport-well-known.yml - type: LLMsTxt name: llms.txt url: llms/heathrow-airport-llms.txt maintainers: - FN: Kin Lane email: kin@apievangelist.com