A relevant quote:
" . . . travel deals website Travelzoo predicts September and October will be "big months for travel".
A survey of 2,000 of its members carried out last week found the majority said they plan to take a trip around that time.
However, the company warned that prices could increase if demand continues and there is a limited number of destinations open for travel.
"Right now we are seeing some good prices for September and October, but there's every indication it will start to prove more challenging for [package-holiday customers]," the company said"
Source:
https://www.bbc.co.uk/news/business-56893247
So book that autumn break now!