A new study by Jetcost.co.uk reveals that 89 percent of airline cabin crew members have broken the rules during flight.

Most notable: Of the 718 British flight attendants surveyed, 21 percent said they had “indulged in sexual relations with a colleague during a flight” and 14 percent said they’ve engaged in sexual relations with passengers.

The results revealed that 89 per cent of cabin crew had broken rules while at work, with a fifth of those surveyed admitting they had stolen from passengers.

The most common offence was lying to passengers about product availability during a flight, with 28 per cent of crew admitting to it.

Seven per cent had accepted tips and gifts from passengers, while 20 per cent admitted to deliberately short-changing passengers. Asked how much they thought they had pocketed from short-changing passengers per month, the answers averaged out at £331 per year.

Respondents who had short-changed passengers were asked to provide details of how they did it, with 54 per cent revealing they had given change in a different currency, while 40 per cent said they had got away with it simply because “most passengers don’t check their change”.