API Integration for Flight Search

I need the TRAVELNDC FLIGHT BOOKING API integrated into my existing booking website, www.wakkago.com. My site is built with PHP. AND HAS LIVE DATA. WE WANT TO ADD MORE AIRLINE DATA TO IT

Key Requirements:
- Implement flight search functionality
- Filter by airlines
- Sorting options (to be confirmed)

Payment integration and admin panel are already set up.

Ideal Skills & Experience:
- Proficiency in PHP
- Experience with API integration
- Familiarity with flight booking systems

Please refer to the attached API documentation for details.