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AirDo

AirDo (HD) is a Japanese airline based in Sapporo, Hokkaido. Its published network is strongly Hokkaido-focused, linking Sapporo New Chitose and other Hokkaido airports with Tokyo Haneda and selected cities on Honshu and Kyushu. It is best understood as a domestic, regional passenger carrier rather than a long-haul network airline. AirDo is not a member of oneworld, Star Alliance, or SkyTeam; its own loyalty offering is My AIRDO / DO Miles. Travelers comparing or crediting flights should pay close attention to ANA codeshare details, because ANA states that miles can only be registered when traveling under an ANA flight number and that Star Alliance and other partner-airline mileage accrual is not eligible on these AIRDO-operated codeshares.