The majority of headteachers say they will set their own term dates when they are given new powers from September.
70% of headteachers say they plan to change dates as soon as they have the authority instead of the current centrally-administered system, according to research by the Boston Consultancy Group.
And 60% said this was so families could enjoy more affordable holidays.
The Government’s decision to only allow absences during term time under ‘exceptional circumstances’ has led to parents facing fines for taking children out of school.
Parents hope flexible term dates will allow them to avoid peak travel times when prices are higher.
An ABTA spokeswoman said: "The reason prices rise during school holidays and other busy periods is due to supply and demand.
"Staggering by region may help alleviate the sharp peaks in holiday prices, by allowing demand to be spread over a longer period. However, demand , both from families and from consumers across Europe will likely still be concentrated around the traditional school holiday periods and so prices will still be higher at Christmas, Easter and in the summer, than at off-peak times."
