Indonesia, Malaysia, Thailand Growth Triangle (IMT-GT) is a sub-regional collaboration formed to accelerate economic transformation in less developed regions. The Growth Triangle is the basis of an economic concept driven by a strong political commitment. Through one of the sectors within the IMT-GT framework, the sub-regional cooperation in air transportation, Indonesia supports and plays an active role in implementing IMT-GT activities. In terms of implementation, it proposes flight points

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... ween the IMT-GT regions to improve air connectivity between these countries. The purpose of this study is to formulate the best strategy formulation for Indonesian government policymakers, in this case, the Directorate General of Civil Aviation, Ministry of Transportation, to deal with IMT-GT cooperation. This research uses a qualitative approach with a SWOT analysis method and a grand strategy matrix. The research locus was carried out at the Directorate General of Civil Aviation of the Ministry of Transportation of the Republic of Indonesia in 2019 with 6 key informants who have competencies and strategic positions at the Directorate General of Civil Aviation. Received: 18 May 2022 / Accepted: 18 August 2022 / Published: 2 September 2022