The unprecedented 'flights to nowhere' sold out in record time, within 10 minutes of going on sale.
There were 150 seats listed for $787 for an economy seat, $1787 for Premium and a few business class seats for $3787.
The move was slammed for being a waste of money and also bad for the environment.
Others also said it was a sign of how desperate to travel Australians are becoming in the wake of the coronavirus pandemic.
"We knew this flight would be popular, but we didn't expect it to sell out in 10 minutes," a Qantas spokesman said.
"It's probably the fastest-selling flight in Qantas history."
The border-free flight touched down in Sydney after seven hours of soaring over some of the country's most iconic landmarks, including Uluru, Kata Tjuta, the Whitsundays, Gold Coast, Byron Bay and of course Sydney Harbour.
Passengers also enjoyed a specially curated Neil Perry dining menu on board.