Finnair rhymes with:
billionaire, concessionaire, debonair, doctrinaire, ensnare, glenayre, knerr, macnair, mcnair, millionaire, multimillionaire, nair, nationair, ne'er, questionnaire, snare
Finnair sounds like:
famer, fanara, feinauer, feiner, femur, fenimore, fenner, fennimore, finamore, finer, finery, fiumara, fonar, foner, fonner, funari, funaro, funerary, funnier