Cheap nonstop airfares to Seoul. These are on T'Way Air, which is a low cost carrier, but they do include 10kg cabin baggage as well as 23kg checked luggage, and a light meal.
Dates are pretty limited, with a few in February, late April and May. There are more dates in other months for around $50 more.
Sydney to Seoul $663
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Price only available through 3rd party sites I've never heard of. Anyone used Flightnetwork or Mytrip before?