Airlines has rapidly established itself as a cost-effective choice for tourists looking for flights to locations in the One of the Sun Country Airlines SYD Terminal busiest international airports in the Southern Hemisphere, Sydney Kingsford Smith Airport (SYD), is currently the departure point for Sun Country Airlines flights due to the increasing demand for international travel from Australia. Everything from check-in processes to terminal facilities will be covered in this guide to Sun Country Airlines’ operations at SYD.