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airportsapi vs CarsXE

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

APIairportsapiNEW—CarsXENEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

airportsapi vs CarsXE: common questions

Which is more reliable, airportsapi or CarsXE?

On our scheduled checks, CarsXE leads on measured uptime — airportsapi at —% versus CarsXE 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 airportsapi and CarsXE need an API key?

airportsapi needs no key, while CarsXE requires a free API key. If you want to start calling without signup, reach for airportsapi first.

Can I call airportsapi and CarsXE from the browser?

Only airportsapi is browser-friendly — it returns CORS headers over HTTPS. CarsXE needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are airportsapi and CarsXE free for commercial use?

airportsapi has unclear commercial terms, and CarsXE has unclear commercial terms. 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.