There are 3 ways to get from Hong Kong International Airport to city i.e. Airport bus, Hong Kong Airport Express, and taxi.
Cheapest Way from HK Airport to City
However, the most straightforward and budget-friendly aka cheapest way from HK Airport to City is to take the Airport Bus. For my case, I was heading to Hello Inn located at Tsim Tsa Tsui. Other means of transportation would require me to switch to another transport before I can reach Hello Inn. Plus, it also costs a lot more.