Need Travel Technical Full Stack Dev to guide me find right supplier & tech stack

Hi, I need someone who is expert in travel tech and full stack web dev and help me find my competitors suppliers. I want to know the kind of api they use, basically I want to start flight reservation website... (Budget: $10 - $50 USD, Jobs: API Development, Backend Development, Database Management, Frontend Development, Full Stack Development, HTML, MySQL, PHP, Software Architecture, Web Development)