Hong Kong Airport Shuttle services
There are multiple transportation options from Hong Kong airport to the city centre, however by public bus is the most affordable option for those wishing to travel on a budget. If you decide to take the bus, it will cost you a mere 4.40€ (40 HK$), however the journey is much longer than the other transportation options. The bus will take around 1hr 15min to reach the city centre and this can take even longer in traffic.

CityFlyer A11 Shuttle: Hong Kong Airport to Hong Kong Island
The CityFlyer A11 bus operates the route between Hong Kong Airport and the city centre on the North of Hong Kong Island. The bus is double-decker and acts as a nice introduction (almost like a tour bus) for all of the stops on the way to the city. The bus makes multiple good stops, such as City Hall, Connaught Road Central, throughout the city and thus is a great option for those who are new to Hong Kong.
CityFlyer A11 Shuttle: Hong Kong Airport to Kowloon
This route services the area of Kowloon, the northern part of the city centre of Hong Kong. This bus will also take over an hour (around 1hr 15min) to reach the area of Kowloon and provides many stops along the way which are convenient to multiple major hotels and tourist spots.
Convenience and Availability
Although the shuttle service is cheap and provides some interesting features, the journey is very long to get to the city centre by this method. The bus will take over an hour to reach the city centre and there can be up to a 20 minute wait for the next one. The bus schedule also operates between 06:00 a.m to 00:30 a.m and the night bus (N11) operates between 00:50 a.m to 04:50 a.m at a slightly cheaper rate of 3.40€ (31 HK$).
The A11 bus offers free Wi-Fi on board.
Audio and visual recordings are available too for important information about the stops the bus makes.
Air-conditioning and luggage racks are available on the bus.
Hong Kong Airport Shuttle Ticket Information
There are multiple ways to purchase a ticket for the CityFlyer Airport lines. Tickets are available from the Airport Ground Transportation Centre (where the bus stop is located) or straight from the driver. You are able to just buy the straight one way ticket, or head to the customer service desk in teh Transportation Centre to collect a CityFlyer Return Pass for HK$55 (6€) which is valid for 3 months from the date of issue on any City Flyer service.
If you are staying for a while, purchasing a re-loadable "Octopus" card is advisable.
Drivers on the buses will not give change for tickets purchased there.
You can only purchase your tickets with Hong Kong Dollars.
Where to catch your Hong Kong Airport Shuttle
The bus stop for the CityFlyer buses is located in the Airport Ground Transportation Centre which is a short walk to from the arrivals hall. Follow the signs and exit to the right hand side of the arrivals entrance.
Hong Kong Airport Shuttle to Hotel
Although being a very cheap option in comparison to other transport in Hong Kong and having some nice features, the bus journey on the City Flyer's major city lines are very long and can be even worse in traffic. This can add a lot of extra time to your journey. Additionally, the lack of door-to-door service means that you may need to spend more time and money getting a different transport option to your hotel.