Auckland Multi-City to Santiago Chile, Then to Madrid, Spain, and to Tokyo, Japan $901 Via LATAM & Finn Air (April)
LATAM & Finn Air are offering very cheap flights basically around the world for $900..except the last part back to Auckland. All flights include bags, meals, etc. There are some combinations also using Air Tahiti and Air China as well.
There are a few OTAs offering this fare but Jetabroad is offering it on Skyscanner NZ.
Tue 10 Apr 6:15 PM Auckland (AKL) via LAN Airlines 11h 5m
Tue 10 Apr 2:20 PM Santiago, Chile (SCL)
Tue 17 Apr 7:15 PM Santiago, Chile (SCL) 12h 35m
Wed 18 Apr 12:50 PM Madrid (MAD)
Sat 21 Apr 10:20 AM Madrid (MAD) via Finnair 15h 35m
Sun 22 Apr 8:55 AM Tokyo Narita International, Japan (NRT)
A one-way back to Auckland is $600 but that's at normal price. You'll have to book this leg seperately (if you want to come back) otherwise the entire trip goes from $900 to over $3300.
via Secret Flying