Some fares only allow hand luggage. If you are planning to take luggage that will not fit in the overhead cabin you need a ticket that allows checked baggage. Extra baggage can be paid for at the airport but it is usually cheaper to pay at the time of booking.
Virgin Australia, Tiger Airways or Jetstar: either checked luggage & carry on, or, only carry on luggage. Please refer to your airline confirmation email
All other Airlines: refer to your e-ticket receipt
If you wish to select a fare that includes checked baggage please select the fare that shows a symbol of a blue suitcase.
If you only wish to purchase a fare that allows a carry on bag only, please select the fare that has a symbol of a blue suitcase with a red cross through it.
If you have completed your booking and selected "Carry On" bags only and you now wish to purchase the checked baggage allowance, you will need to call the airline direct to make the changes.
Any questions about bulky items, sports equipment (bikes, golf clubs, surfboards etc), or any dangerous items, (chemicals etc) will need to be taken up with the airline you are travelling with directly.