Adelaide to SF/LA from $1,031 per person return. Offer ends 3 November 2017.
Sydney to LA:
Travel Period: Economy: 10 Oct - 22 Nov 2017, 22 Jan - 20 Mar, 4 May - 17 Jun 2018, return 21 Nov 2017 - 3 Jan 2018, 18 Feb - 30 Jun 2018. Premium Economy: 10 Oct - 29 Dec 2017, 9 Jan - 17 Jun 2018, return 20 Nov 2017 - 27 Jun 2018. Business: 10 Oct - 29 Dec 2017, 9 Jan - 17 Jun 2018, return 20 Nov - 10 Dec 2017, 5 Feb - 27 Jun 2018
Sydney to SF:
Travel Period: Economy: 10 Oct - 19 Nov 2017, 16 Jan - 16 Feb, 26 Apr - 13 Jun 2018, return 5 Nov 2017 - 10 Jan 2018, 25 Feb - 30 Jun 2018. Premium Economy: 1 - 27 Dec 2017, 16 Jan - 15 Jun 2018, return 19 Nov 2017 - 30 Jun 2018. Business: 1 - 27 Dec 2017, 16 Jan - 15 Jun 2018, return 19 Nov 2017 - 30 Jun 2018
Air NZ Flights are also on sale throughout North American summer including Canada but not quite as cheap.