Gate allocations coming from someone who works at SYD keeping in mind some gates are not currently in game or are undersized.
T3
- Qantas Domestic - Gates D1-D14
- QantasLink Jets - Mainly D1, D7, D8, D9, D14, but can use any from D1-D14
- QantasLink Dash8 - D1, D16-19, D64-D70
- Alliance (Operate E190’s under wet lease including the Qantaslink branded E190) - Same as QantasLink jets
T2
- Jetstar - Gates D49-D59, and occasionally use D31, D33, D35, D39, D41
- Virgin - Gates D31-D45
- REX Jet - No specific gates, whatever is spare in T2
- REX and Link Saab’s - Stand F1-F16 and Stand 90-94
T1 International
All airlines can and do operate across the entire terminal however these airlines are predominately allocated based on alliances as follows:
- Qantas and Oneworld (Cathay, Qatar, American, JAL, Fiji, etc) - Gates I8-I37
- Skyteam (China Airlines, China Southern & Eastern, Garuda, Korean, Vietmam, ec) - Gates I24-I37
- Star Alliance (Air New Zealand, Singapore, Air China, Thai, ANA, United, etc) - Gates I50-I63
- Budget (Jetstar, AirAsia, Scoot, Cebu, T-Way, etc) - Anywhere there is space
- Non-alliance (Emirates, Etihad, Virgin) - Gates I50-I63
I probably forgot a few but these are the main carriers, others just go wherever there is space