expired Flights to San Francisco Return from Melbourne $759, Sydney $795 on United Airlines @ IWTF
To get the absolute lowest fare, be sure to select 'STA Travel' as the supplier and then use their promo code UA100 on the booking page to get an extra $100 off. This takes the $859 fare down to just $759 return. This promo code expires after it has been used 50 times, so get in quick to secure your fare!
Travel across a wide range of late 2018 dates including USA Summer.