The world’s longest flight: nonstop, 20 hours, as you recline in your wide armchair and decide whether you want to relax with the very best Champagne, enjoy a chef-designed meal with a traveling companion seated opposite, or get the crew to make your sumptuously soft bed with fresh linens.

(SOURCE) https://www.cnn.com/travel/article/what-qantas-20-hour-flight-will-be-like/index.html