Finnair is a member of the Oneworld alliance and also participates in code sharing with several other airlines. Oneworld affiliates include American Airlines, British Airways, Cathay Pacific, Qantas, Japan Airlines, Iberia and Air Berlin.innair is a member of the Oneworld alliance and also participates in code sharing with several other airlines. Oneworld affiliates include American Airlines, British Airways, Cathay Pacific, Qantas, Japan Airlines, Iberia and Air Berlin.