Flightradar24 is the world's most popular real-time flight tracking platform, monitoring over 250,000 daily flights using data from a global network of ADS-B, MLAT, and radar receivers. The FR24 API provides developers with programmatic access to live aircraft positions, historical flight data, flight summaries, and reference data for airports and airlines. The credit-based subscription API uses Bearer token authentication and is available at https://fr24api.flightradar24.com/api with three tiers — Explorer, Essential, and Advanced — covering hobby projects through high-volume commercial applications.
Flightradar24 publishes 16 API contracts indexed on the APIs.io network, including Airlines API, Airports API, Flight Summary API, and 13 more. Tagged areas include Aviation, Flight Tracking, Real-Time, Aircraft, and Airports.
The Flightradar24 catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
Flightradar24’s developer surface includes authentication, developer portal, documentation, getting-started guide, sandbox, pricing, FAQ, and 20 more developer resources.
Regulatory Posture applies to this provider. Its tags matched the
Horizontal (data, software, accessibility, platform) regime, so
Regulatory Posture carries 15 points of the composite.
If this regime is wrong for your business, say so on your
provider repo — the
applicability map is public and we will correct it.
Create-or-Update Ergonomics does not apply to this provider. The published contracts declare
no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's
denominator entirely — not scored zero. A reference or data API is not deficient for being unable to
upsert.
The six quality facets above are damped to 85 points between them,
because the conditional facet above carries the other
15. That is why each facet's contribution is shown against a damped
maximum: raising a quality facet moves the composite by 85% of its nominal
weight, not 100%. The full arithmetic is at apis.io/rating/.
Show this score on your site.
It updates itself when the score changes. Paste this where you link to your API docs:
<a href="https://apis.io/providers/flightradar24/"><img src="https://apis.io/badge/flightradar24/card.svg" alt="Flightradar24 on APIs.io — Kin Score by API Evangelist"></a>
Other styles, a README pill and a shields.io endpoint are on the badge page.
Raise your score.
Agent readiness — checks not met, largest first (exact, from this profile):
Stable Error Semantics+8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card+8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Delegated User Identity+6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Typed Event Surface+6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Agent Skills+5 pts — skills artifact present, graded by who authored it
4 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
Access Clarityscores 18.4 — up to +16.3 composite points
The Kin Score Market layer reads a provider inside its market:
its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted:
not part of the Kin Score or agent readiness.
Registered MCP server and declares compatibility are report only — not weighted.
Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
Returns a lightweight snapshot of real-time aircraft positions worldwide, including latitude, longitude, altitude, speed, heading, callsign, and aircraft registration. Optimised...
Returns complete real-time aircraft flight movement records including latitude, longitude, speed, altitude, and heading alongside enriched flight information such as origin and ...
Provides historical aircraft positional data using Unix timestamp ranges. Returns lightweight position records (latitude, longitude, altitude, speed, heading, callsign, registra...
Returns full historical aircraft flight movement records for a given time window, combining positional data with enriched flight metadata including origin, destination, callsign...
Returns synopses of individual flights including key event timings and locations such as actual takeoff and landing times, departure and arrival airports, and primary flight, ai...
Returns the full positional track of a specific flight identified by its FR24 flight ID. Provides a time-ordered sequence of latitude, longitude, altitude, speed, and heading re...
Returns detailed reference data for airports worldwide, including full airport name, IATA and ICAO codes, geographic coordinates, elevation, country, city, state, and timezone. ...
Returns reference data for airlines including airline name, IATA code, and ICAO code. Supports lookup by identifier. Useful for resolving callsign prefixes and operator codes pr...
Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we
store it to create your key and to recognise you if you sign in with another
provider. See our Privacy Policy and
Terms.
Kin Score
How this is scored →
It updates itself when the score changes. Paste this where you link to your API docs: