Sydney Airport (SYD) separates T1 International from T2 and T3 Domestic. A flight from the Philippines followed by a domestic connection can therefore involve both an arrival process and a move between terminal areas. For a city stay, the other useful comparison is between airport rail, local buses and a direct road journey to the accommodation.

International and domestic terminals need a vehicle transfer

Sydney Airport says it is not possible to walk between T1 International and the T2/T3 Domestic area. Options include the complimentary terminal bus, train, taxi and rideshare.

T2 and T3 are different: the airport describes a pedestrian route between those domestic terminals through the P1 car-park area. Read the actual terminal pair before planning the connection, since a domestic-to-domestic move is not the same journey as arriving internationally at T1.

A Qantas domestic connection still needs bag collection

For an international arrival connecting to a Qantas domestic flight, Qantas directs passengers through immigration, then baggage collection and customs. Bags are rechecked for the domestic flight, with their tags kept attached.

Qantas says the collection requirement also applies when the domestic flight is on the same ticket. Its eligible T1–T3 Terminal Transfer process then includes bag drop and screening before the airline transfer bus. That is a specific passenger process, rather than simply boarding a public bus immediately after landing.

The airport's complimentary bus serves both terminal areas

The public Terminal Transfer Bus connects T1 with T2 and T3. At T1, the airport identifies the Arrivals level outside Arrival Hall B, following the domestic-transfer signs. At T2 and T3, stops are outside each terminal on Arrivals.

Use this service when it fits the onward terminal and operating period. Qantas's separate transfer is for eligible airline connections; the public terminal bus is the alternative for moving between buildings without assuming access to that airline-specific process.

Airport rail has a station-access fee as well as the fare

Transport for NSW identifies the T8 Airport & South Line, with stations underneath the terminal areas. The International station serves T1, while the Domestic station serves the T2/T3 side.

Travel using an airport station includes a station-access fee in addition to the train fare. Adult contactless travel requires one card or device per passenger, used consistently to tap on and off. Include the complete rail cost when comparing it with a bus or a shared road vehicle, particularly for several people travelling together.

Routes 420 and 350 serve different journeys

Route 420 links Mascot and Burwood through the International and Domestic terminals, via suburbs including Rockdale and Campsie. It can suit an address along that corridor or a connection planned through those stops.

Route 350 links the Domestic terminal with Bondi Junction via Mascot, Maroubra and Coogee. It is not the same option for a T1 arrival: reaching the domestic side would add another stage. Choose the route by its terminal and destination rather than treating all airport buses as interchangeable.

A direct vehicle still needs the right pickup area

Transport for NSW identifies taxi ranks outside each terminal. Sydney Airport separately directs app passengers to the signed rideshare/public pickup areas, marked with green signs.

A direct vehicle suits accommodation away from the useful rail or bus stops. After baggage collection, go to the meeting area for the chosen service rather than assuming a taxi rank, app pickup and terminal drop-off curb are the same location.