Cruise Itinerary
Cruise sailings, day-by-day itineraries, weekly fare history, port traffic and a cruise price index
Normalized cruise line inventory: ships, sailings, itineraries, ports and lead-in fares.
CruiseFeed API is a free Transportation API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
Every sailing, one clean dataset: itineraries, ships and ports from many cruise lines, updated regularly.
Details from cruisefeed.io.

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Cruise sailings, day-by-day itineraries, weekly fare history, port traffic and a cruise price index
The CruiseFeed API is provided by CruiseFeed (cruisefeed.io). Every sailing, one clean dataset: itineraries, ships and ports from many cruise lines, updated regularly.
Yes. The CruiseFeed API is listed in the Transportation category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The CruiseFeed API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the CruiseFeed API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The CruiseFeed API is served over HTTPS, so it's safe to use in production.