Many studies applied the mood system and transitivity on the clauses, but a little are known that mood system and transitivity could also be applied on the slogans. As a descriptive analysis, this study tries to investigate the mood system and transitivity on the fourteen national airlines slogan and forty regional airlines slogan. The findings indicate firstly, the mood system found in the both national and regional airlines are declarative and imperative mood. Secondly, referring to the study, it is reported that the transitivity in the national airlines slogans found are material, mental, and relational processes while the regional airlines slogan found are material, mental, relational, and behavioural processes. Both of the national and regional airlines slogans: the major mood is declarative mood and the major process is relational process.