An AirAsia passenger caused an uproar after trying to upgrade herself to a premium seat 3 times without paying

Facebook / Bruce LamLam was reportedly rewarded for his efforts with a free cup of mineral water.

After a woman on an AirAsia flight tried to upgrade her seat three times without paying, fellow passenger Bruce Lam took matters into his own hands, according to the Straits Times blog Stomp.

The woman had reportedly purchased an economy ticket for a flight from Kuala Lumpur to Hong Kong, but noticed that a row of seats in the plane’s premium class was empty. After she attempted to move to one of the premium seats, a flight attendant reportedly told her to return to her original seat.

The woman then reportedly got in a four-to-five minute argument with the flight attendant before returning to her seat.

But once the plane took off, the woman returned to the empty premium-class seats, engaged in another argument with a flight attendant, and returned to economy class again.

After the woman reportedly tried to upgrade for the third time, Lam started scolding her.

“Just return to your seat. Once, twice, thrice, they asked you. Do you know shame at all,” Lam reportedly said.

“That’s none of your business,” the woman reportedly replied, before returning again to her original seat. Lam reportedly received a free cup of mineral water from the flight attendant after the exchange.

Lam posted a video of the exchange on Facebook, which shows him arguing with the woman.

AirAsia declined to comment on the incident.

As smartphones have made it easier for passengers to film and share videos of disruptive behaviour on their flights, airlines have had to deal with a shifting perception of air travel that emphasises the most shocking incidents. But as airlines increase the number of seats in their aircraft and make them smaller, some have argued that they aren’t helping to make flying less stressful.

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