At the Counter 13 of Exit B area, there are transfer buses from Hong Kong Airport(https://www.travelchinaguide.com/cityguides/hongkong/airport.htm) directly to Disneyland, but it is expensive: 140HKD per person and the same price for kids. Or you can take S1 Hong Kong airport shuttle bus(https://www.travelchinaguide.com/cityguides/hongkong/transportation/air-bus.htm) to Tung Chung and change to Disney special line. The airport bus is about 70HKD. :-)
Regal Airport Hotel, Hong Kong is close to the airport.