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Ignav Flight API vs Transport for Philadelphia, US

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

APIIgnav Flight APINEW—Transport for Philadelphia, USNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Ignav Flight API vs Transport for Philadelphia, US: common questions

Which is more reliable, Ignav Flight API or Transport for Philadelphia, US?

On our scheduled checks, Transport for Philadelphia, US leads on measured uptime — Ignav Flight API at —% versus Transport for Philadelphia, US 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 Transport for Philadelphia, US need an API key?

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

Can I call Ignav Flight API and Transport for Philadelphia, US from the browser?

Neither sends browser-friendly CORS headers reliably, so call Ignav Flight API and Transport for Philadelphia, US 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 Transport for Philadelphia, US free for commercial use?

Ignav Flight API has unclear commercial terms, and Transport for Philadelphia, US 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.