Rejseplanen
Danish public transport journey planner API covering all buses, trains, metro, and harbour buses nationwide.
Official Danish aeronautical-information portal — AIP, NOTAMs, and AIRAC amendments. Browser access only, no API.
Important Notes
No public API — official aeronautical publications require browser access to the AIM portal. Naviair separately open-sourced only the frontend of a drone-airspace map (droneluftrum.dk); no working backend API for that project was confirmed.
Naviair (the Danish air navigation service provider) operates the official AIM portal publishing the Aeronautical Information Publication (AIP), Notices to Airmen (NOTAMs), and AIRAC amendments covering Denmark, the Faroe Islands, and Greenland. No developer API was found — access is via the human-facing AIM/briefing portal.
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Danish public transport journey planner API covering all buses, trains, metro, and harbour buses nationwide.
Danish State Railways — no public API. Ticket data accessible via browser automation only.
The Danish Road Directorate API for real-time traffic data, road conditions, and incidents.