# Heathrow Airport

**Canonical:** https://apis.io/providers/heathrow-airport/  
**Website:** https://www.heathrow.com/  
**APIs profiled:** 3

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.

## Kin Score — 26.6 / 100 (emerging)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 26.6).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 0.0 |
| Governance | 3.1 |
| Operational Transparency | 15.8 |
| Developer Ergonomics | 45.7 |
| Commercial Clarity | 34.2 |

## Agent readiness — 9.0 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Documented APIs · Enrolment and Azure AD account required — onboarding: unknown, pricing: unknown, trial: no (confidence: high).

## APIs (3)

- **Heathrow Flights API** — 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...
- **Heathrow Flight Connections API** — 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. Th...
- **Heathrow Weather API** — 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...

## Security (2)

- **Heathrow Airport Authentication** — mutualTLS/federated-sso · 2 schemes
- **Heathrow Airport Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Travel, United Kingdom, Airports, Aviation, Airport Infrastructure, Flight Information, Transportation, Passenger Experience

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/heathrow-airport/). Scores are computed from the provider's own public artifacts under a published rubric.