Articuno is a dual-type Ice/Flying Legendary Pokémon introduced in Generation I). It is one of the three Legendary birds of Kanto, along with Zapdos and Moltres. In Galar, Articuno has a dual-type Psychic/Flying regional form, introduced in The Crown Tundra expansion of the Pokémon Sword and Shield Expansion Pass).
Therefore, the type of Articuno is Ice/Flying in the original Kanto form and Psychic/Flying in the Galarian form.