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Ignav Flight API vs OpenSky Network

Same instrument, two spec sheets — measured, not claimed.

APIIgnav Flight APINEW—OpenSky NetworkNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearno
Data licenseUnverifiedNon-commercial/research use per OpenSky terms
Free tierFree — limits not publishedFree for non-commercial/research use; anonymous requests are rate-limited and time-coarsened
Rate limitUnpublishedAnonymous access throttled; registered/OAuth users get higher limits
In directory since2026-07-052026-07-05
operationalpartialdownno data

Ignav Flight API vs OpenSky Network: common questions

Which is more reliable, Ignav Flight API or OpenSky Network?

On our scheduled checks, OpenSky Network leads on measured uptime — Ignav Flight API at —% versus OpenSky Network at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Ignav Flight API and OpenSky Network need an API key?

Neither needs a paid key — Ignav Flight API is callable with no signup, and OpenSky Network is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Ignav Flight API and OpenSky Network from the browser?

Neither sends browser-friendly CORS headers reliably, so call Ignav Flight API and OpenSky Network from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Ignav Flight API and OpenSky Network free for commercial use?

Ignav Flight API has unclear commercial terms, and OpenSky Network is personal/non-commercial only. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.