Yes, it is possible to sync Person Accounts with HubSpot, though there are some things to keep in mind.Currently HubSpot cannot create Person Accounts. You can, however, set the integration to create Leads in Salesforce when new contacts are created in HubSpot (Account Menu > Integrations > Settings under Salesforce > Creating Records in Salesforce: Default Object). Once the lead is created you may convert them to either a person account or a business account in Salesforce. Learn more about this here.
If you have chosen here to create Salesforce Contacts when a contact is created in HubSpot, a standard Contact record will be created which may be associated with a Business Account, but not a Person Account.
When creating a new Person Account in Salesforce, a new contact will be created in HubSpot (when auto-add is enabled) and syncing will begin as normal.
If you require the ability to create Person Accounts when a record is created in HubSpot you may build a custom integration via the HubSpot Contacts API or through a certified HubSpot Partner; however, please note that these methods are not supported by HubSpot Support.