YOUNG kids on planes are most likely to have a tantrum 27 minutes and 48 seconds into the flight, research claims.
Each one lasts an average 15 minutes, six seconds.
But a maths whizz has devised a formula to calm tots long enough to get through a short-haul trip.
Oxford University’s Dr Tom Crawford calculated the time of an expected outburst based on four triggers — sleepiness, boredom, hunger and noise.
Each was scored from zero to ten, with zero meaning the issue is being ignored and ten meaning it is being well managed.
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Dr Crawford said: “If all four main causes are addressed — meaning they score ten — the average time can be increased to 129 minutes, or five times the average.
“This covers many short-haul flights to Europe that many will be taking in half term.”
He recommends parents make sure their kids nap for 37 minutes, have boredom-busting activities for 31 minutes, are fed for 19 minutes, and have noise blocked out with music or reading for 14 minutes.
The research for Asda also found tantrums leave a third of parents feeling stressed, and a fifth felt embarrassed.
Two-thirds have heightened anxiety at the idea of flying with a misbehaving toddler.
It is so fear-inducing that a quarter would rather go for lunch with their in-laws.