用护照和国际航班机票是否可以进香港

应该是可以的。 持国际连接机票， 可以入境香港免签7日。 
National China (People's Rep.) (CN)
Embarkation China (People's Rep.) (CN)
Transit Hong Kong (SAR China) (HK)
Destination Indonesia (ID)
ALSO CHECK DESTINATION INFORMATION BELOW


Hong Kong (SAR China) (HK)


Visa required, except for Holders of Hong Kong (SAR China)
passports; Or:
Visa required, except for Holders of "Exit-entry Permit for
Traveling to and from Hong Kong and Macao" (EEP) containing an
exit endorsement issued by Public Security Bureau Office in
Mainland China stating purpose of entry; Or:

Visa required, except for : residents of Macao (SAR China)
holding Macao Smart Permanent Identity Card (MSPIC) . Or:

Visa required, except for :
- holders of a Macao (SAR China) passport or a Macao (SAR
China) Travel Permit. In all other cases:
Visa required, except for Holders of:
- travel documents issued by the Hong Kong Immigration

Department, endorsed with "Holder's eligibility for Hong Kong
(SAR China) Permanent Identity Card verified ; or

- a Hong Kong (SAR China) Permanent Identity Card.

TWOV (Transit Without Visa):
Visa required, except for Nationals of China (People's Rep.)

continuing their journey to a third destination within 7 days.

A return ticket is not required if the onward destination is

China (People's Rep.) or Macao.
Warning:
- Visitors not holding return/onward ticket could be refused

entry.
- Except when in transit to either mainland China (People's
Rep.) or Macao (SAR China);