apilayer aviationstack

Overview

aviationstack (an APILayer product) provides live flight tracking, schedules, and airline data. Auth is an API key (an invalid key returns 401, verified).

Quick Start

Flights (replace YOUR_KEY):

curl "https://api.aviationstack.com/v1/flights?access_key=YOUR_KEY&limit=1"

{
  "pagination": { "limit": 1, "offset": 0, "count": 1, "total": 15234 },
  "data": [
    {
      "flight_date": "2026-08-22",
      "flight_status": "active",
      "flight": { "number": "KL1234", "iata": "KL1234" },
      "departure": { "airport": "AMS", "iata": "AMS" },
      "arrival": { "airport": "CDG", "iata": "CDG" }
    }
  ]
}

Authentication

• Register at aviationstack.com → free API key.
• Send it as the access_key query parameter (invalid → 401, verified).

Rate Limits & Notes

• Free tier: 100 requests/month (check the docs); paid plans scale.
• Endpoints: /v1/flights, /v1/schedules, /v1/airlines, /v1/airports.
• Free tier shows historical/live data with limits; real-time requires paid plans.

FAQ

Is aviationstack free? Free tier: 100 requests/month; more is paid.

How do I get a key? aviationstack.com → register.

What’s the auth style? access_key query parameter (verified).