Cheap flights to San Francisco! San Francisco Return from Gold Coast $752 / Sydney $783 / Melbourne $766 / Brisbane $793 (May to October) on Air New Zealand.
How to find dates…it depends.
1) Either on the search link above, if you have specific dates in mind, on flightscout: https://flightscout.co/au/cheap-flights/anywhere-to-san-fran… – seems to sometimes be a dollar or two cheaper than the advertised FS price though once you get to skyscanner from them.
2) If on flightscout, choose departure city and see available cheap dates.
