Looks like Singapore Airlines are doing some great deals to Japan from all Australian Ports and Singapore with some good dates for the ski season too. From as little as $671 Return and Singapore is a great place to warm up after a Ski Trip!
Jetstar also doing some great deals for the ski season similar prices for under $700 and good dates Dec and Jan to March
Check them out here and grab yourself a seat
The $AUD is strong at the moment so can get a great deal skiing Nozawa too with average package for 7 Nights Stay and 6 Day Lift Pass for less than $900. Can check and book here