Air New Zealand’s cuddle class

Couples - or very close friends - flying between New Zealand and Los Angeles can cosy up in Air New Zealand’s “Cuddle Class”. For an extra fee (around the cost of a whole extra ticket), you and your significant other can bag the seat between you, and fold the whole row out into a couch/bed to cosy up on. Not one for those with a fear of PDA.

Air New Zealand's SkyCouches can fit two

VietJet’s bikini-clad staff

Since its launch in 2012 the budget airline has stirred up much controversy thanks to its unorthodox in-flight entertainment. Flight attendants dressed in red and yellow bikinis saunter up and down the aisle, sometimes handing out presents to children. This Trump-esque vision of an airline has actually proven very popular; with the CEO featured in this year’s Forbes World’s 100 Most Powerful Women list.

Fully clothed VietJet staff

Singapore Airlines’ postcards from the sky

Not many of us still write postcards home, but if you are that way inclined, why wait until you’ve reached you destination to send one? Travellers on Singapore Airlines can write theirs from the sky and they will be posted off for you once the plane lands.

Patriotic wailing on North Korea’s Air Koryo

Flight attendants singing patriotic songs and delivering propaganda speeches hailing their leader – what’s not to like? The airline is consistently ranked as one of the world’s worst, but it’s probably best to save your criticism until you get home.

Air Koryo (Getty Images)

KLM’s Meet and Seat