Are there any cheaper houses near the Hong Kong airport?

There are no cheap hotels near the airport. Take the subway to Tung Chung. There is a Novotel City Gate, which is a little cheaper. However, Hong Kong is a city that never sleeps. In fact, there is no danger. You can book a hotel near the downtown subway station. However, it should be noted that the last subway in Hong Kong ends at about 12. If the concert is not over yet, you should come out early and go back to the city, otherwise I'm afraid you'll have to take a taxi.

Supplement:

There are many hotels near Wan Chai, and the prices are relatively cheap. It's also convenient to get back from the airport and transfer to the subway, but it's not as convenient as taking the last bus on the Hong Kong Island Line to Wan Chai. I have sent you a map of the hotel. Ask me if you don't understand anything.