You know the “Duty Free” moment on international flights, when you have to make eye contact with the flight attendants and shake your head as they come down the aisle with that cart full of stuff nobody much (other than the Bhutanese Royal family) seems to buy? You’d rather not be bothered and they’d rather hang out in the galley and read a magazine.
So, is pushing those clanky carts around the airplane worth it? Delta Air Lines thought not. It pulled its duty free service last summer.
But this video explains how Korean Air guarantees revenue from its A380 Sky Shop duty free service on every flight by, among other things, selling video and still advertising to advertisers: