For UK travellers, school holiday dates are often the single biggest variable in travel timing. Peak weeks – UK summer (late July to August), Easter, October half-term, and Christmas/New Year – consistently see 25–40% higher flight and accommodation prices than the weeks immediately before or after.
Families with school-age children must work within these windows. Travellers without school-age children have a significant advantage: travelling one or two weeks outside school holiday windows often halves accommodation costs and dramatically reduces airport and attraction crowds.