A family were left outraged on a flight departing from Stansted Airport when they found that their seats had sick on, left from a previous passenger.
The South West London family claimed the vomit was merely covered over with a blanket - instead of being cleared up - and they were expected to sit there regardless.
52-year-old Justine Nagaur, was flying to Antalya in Turkey with Corendon Airlines on August 11 with her 63-year-old husband Michael Nagaur, and their two sons Zachary, 20, and Joshua, 16.
The family were especially excited to travel as it was their first foreign holiday in three years, as like so many others they were unable to travel due to the Covid pandemic.
The return flights cost £2,500 - but the start of their trip was ruined when the boys discovered their plane seats.
Mum Justine told MyLondon : "We were all squished trying to find our seat and put our bags up. [I] didn’t notice it immediately just when the boys sat down and started turning around saying 'ew'."
She said at first her son was unable to identify it as sick, but was confused by a blanket on the floor of his seat.
He said he picked it up and found it "was wet and had vomit on it".
Justine said she then told staff of the disgusting discovery and claimed they were "rude" about it.
Speaking about one of the flight attendants, she said: "And not only that, they were rude about it. His attitude was 'why do you need to move?'.
"The attendant said 'it's just like you need to complain for the sake of it'."
The family couldn't understand why the sick had not been cleaned up between flights.
Justine said: "They said they knew about it but weren't going to stop the plane because of the vomit and their company policy is that they don't have a contract with a cleaner so the plane doesn't get cleaned."
She added: "It was a fiasco. It was the fact when you feel like you're in a surreal situation, when you feel an extreme reaction to something but people you're meant to have a sense of trust in are not only rude but completely apathetic about the whole situation.
"You start thinking 'is it me, am I being too fussy?' and [then] think 'no, this is really really disgusting'.
"It was the whole service. I was thinking 'my god, we've just been through such strict regulations in the pandemic and I'm sat in a plane pumping whatever was in that vomit around the entire plane'.
"Even pre-Covid you wouldn't expect that situation. Planes are meant to be cleaned in-between."
According to Justine, some staff expected her sons to sit on the seats for the entire duration of the four-hour flight - and they had to insist on sitting somewhere else.
She said her boys had to sit on the seats with their legs up so as not to touch the floor for about half an hour before they were able to wait somewhere else, and then eventually moved to another seat.
She added: "My oldest is over six foot and had to squish his legs up. [I] said 'can you not find somewhere for them to wait?', but no."
Justine said that she is not just upset about the vomit, but also the "rude" service and the lack of an apology. She said it was "unreal", and added: "[I] have never experienced an attendant so rude."
The family will have to fly back to the UK with the same airline, which Justine said has left her feeling "a bit anxious".
Mirror.co.uk contacted Corendon Airlines for comment but it hadn't yet responded.