Via Nick Reyes Qantas roundtrips between the US and Australia as pricing as low as $639 roundtrip out of several cities including Chicago, Charlotte, Dallas, and Los Angeles.

Many online travel agencies are showing fares in the $700s but smaller sites will drops the price, just search Skyscanner or Momondo. For instance here’s Dallas – Melbourne for $675:

And here’s Dallas – Sydney for $639 roundtrip.

Major online travel agencies price out Dallas Fort-Worth – Melbourne right now around $736, but The Flight Deal points out that clicking through on Priceline will reprice at $684 so you don’t have to work with a small online agency if you don’t want to.

Key details of Qantas fare OLX4R from Dallas Fort-Worth to Melbourne:

• Travel permitted Monday – Thursday in each direction
  
• Outbound must be January 12 – June 28, July 24- September 17, or November 1 – December 10
  
• 5 day minimum stay
  
• $250 change fee, $500 refund fee [non-refundable for no show, and no show incurs a $500 change fee to use residual value of the ticket]

It’s a long way to go in coach but at these prices you’d expect to fly to Sydney, Canada rather than Sydney, Australia. Qantas ‘O’ fares earn 100% of flown miles when crediting to Alaska Airlines Mileage Plan, just 25% of flown miles crediting to American AAdvantage.