Qantas has six 747s with extended range of about 8,800 miles (7,670 nautical miles) and uses them to fly to Buenos Aires as well as Dallas. The planes take off at speeds 5 knots faster than regular 747-400s because wings have to produce more lift for the heavier plane. Flights from Sydney to London still have to make a stop—no commercial airliner can yet do that without making a stop.

Adding the Dallas flight let Qantas tap into the huge hub of its partner, American Airlines, adding 59 additional routes to the Qantas network. As a result of all those connections, the flights have been performing well since they started in May, said Stephen Thompson, executive manager of global sales for Qantas. Round-trip fares on that route typically cost $1,500 to $2,000. For a trip in early February, for example, a nonstop flight from Dallas to Sydney and back cost $2,052, while connecting service through Los Angeles cost $1,692.

Because of headwinds going back to Australia, the Qantas 747 has to stop in Brisbane for fuel. When weather has been bad, flights have had to make occasional fuel stops, but Qantas said it hasn't been any different than other long routes.

Nice idea, but...Sydney's on the other side of the planet. To maximize ratings, of course, you'd want the game to air at 8pm EST, five o'clock on the West Coast. But that would be 10am in Sydney, and nine in the morning in Japan/Taiwan/Korea. It's not like the whole world can see the game live in prime time.