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AeroAPI Key Setup (FlightAware)

The AviationStack key needs to be stored as an encrypted environment variable in Cloudflare — not in the HTML. This keeps it out of your source code.

Step 1 — In the Cloudflare Dashboard

Workers & Pages → your project
→ Settings → Variables and Secrets
→ "+ Add" → Type: Secret
→ Name:  AEROAPI_KEY
→ Value: (paste your AeroAPI key from flightaware.com/commercial/aeroapi/key)
→ Save

The key is encrypted at rest. The Worker reads it as env.AEROAPI_KEY.

Step 2 — Redeploy

After saving the secret, create a new deployment (upload the zip again) so the Worker picks up the new env var.

Or via Wrangler CLI

wrangler secret put AEROAPI_KEY
# paste your key when prompted

Personal tier: free up to ~$5/month of queries (~100 calls). Historical data (back to 2011) requires Standard tier. Use Demo mode for multi-day pattern analysis on Personal tier.

The OpenSky Network API blocks direct browser requests via CORS. Run one of the options below to enable live data.

Option 1 — Python (fastest to run locally)

Save opensky_proxy.py (downloaded separately), then:

pip install fastapi uvicorn httpx
python opensky_proxy.py

Proxy listens on http://localhost:8765. Select "OpenSky via local proxy" in the dashboard.

Option 2 — Cloudflare Worker (free, persistent)

// worker.js — paste into Cloudflare Workers dashboard
export default {
  async fetch(req) {
    const url = new URL(req.url);
    const target = 'https://opensky-network.org' + url.pathname + url.search;
    const res = await fetch(target, { headers: { 'Accept': 'application/json' } });
    const body = await res.text();
    return new Response(body, {
      status: res.status,
      headers: {
        'Content-Type': 'application/json',
        'Access-Control-Allow-Origin': '*',
      }
    });
  }
};

Then set PROXY_URL in the dashboard source to your worker URL (e.g. https://myproxy.workers.dev).

OpenSky free tier: ~400 req/day anonymous, 4000/day registered. Historical data limited to ~7 days on free tier.